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531080 = 235111771
BaseRepresentation
bin10000001101010001000
3222222111122
42001222020
5113443310
615214412
74341224
oct2015210
9888448
10531080
11333010
12217408
13157964
14db784
15a7555
hex81a88

531080 has 64 divisors (see below), whose sum is σ = 1399680. Its totient is φ = 179200.

The previous prime is 531079. The next prime is 531101. The reversal of 531080 is 80135.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a nialpdrome in base 15.

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7445 + ... + 7515.

It is an arithmetic number, because the mean of its divisors is an integer number (21870).

2531080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (699840).

531080 is an abundant number, since it is smaller than the sum of its proper divisors (868600).

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

531080 is a wasteful number, since it uses less digits than its factorization.

531080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 531080 is about 728.7523584867. The cubic root of 531080 is about 80.9816551455.

The spelling of 531080 in words is "five hundred thirty-one thousand, eighty".

Divisors: 1 2 4 5 8 10 11 17 20 22 34 40 44 55 68 71 85 88 110 136 142 170 187 220 284 340 355 374 440 568 680 710 748 781 935 1207 1420 1496 1562 1870 2414 2840 3124 3740 3905 4828 6035 6248 7480 7810 9656 12070 13277 15620 24140 26554 31240 48280 53108 66385 106216 132770 265540 531080