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315390960 = 243253711839
BaseRepresentation
bin10010110011000…
…111101111110000
3210222110112001200
4102303013233300
51121220002320
651143531200
710546531113
oct2263075760
9728415050
10315390960
11152036995
1289759b00
1350459391
142dc5c57a
151ca4e290
hex12cc7bf0

315390960 has 120 divisors (see below), whose sum is σ = 1087906560. Its totient is φ = 81824256.

The previous prime is 315390949. The next prime is 315390967. The reversal of 315390960 is 69093513.

315390960 is a `hidden beast` number, since 31 + 539 + 0 + 96 + 0 = 666.

315390960 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315390967) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20721 + ... + 32559.

It is an arithmetic number, because the mean of its divisors is an integer number (9065888).

Almost surely, 2315390960 is an apocalyptic number.

315390960 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

315390960 is the 8880-th decagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 315390960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (543953280).

315390960 is an abundant number, since it is smaller than the sum of its proper divisors (772515600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315390960 is a wasteful number, since it uses less digits than its factorization.

315390960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11895 (or 11886 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The square root of 315390960 is about 17759.2499841632. The cubic root of 315390960 is about 680.6905902280.

The spelling of 315390960 in words is "three hundred fifteen million, three hundred ninety thousand, nine hundred sixty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 36 37 40 45 48 60 72 74 80 90 111 120 144 148 180 185 222 240 296 333 360 370 444 555 592 666 720 740 888 1110 1332 1480 1665 1776 2220 2664 2960 3330 4440 5328 6660 8880 11839 13320 23678 26640 35517 47356 59195 71034 94712 106551 118390 142068 177585 189424 213102 236780 284136 355170 426204 438043 473560 532755 568272 710340 852408 876086 947120 1065510 1314129 1420680 1704816 1752172 2131020 2190215 2628258 2841360 3504344 3942387 4262040 4380430 5256516 6570645 7008688 7884774 8524080 8760860 10513032 13141290 15769548 17521720 19711935 21026064 26282580 31539096 35043440 39423870 52565160 63078192 78847740 105130320 157695480 315390960