Search a number
-
+
315028512 = 25321957571
BaseRepresentation
bin10010110001101…
…111010000100000
3210221210002212200
4102301233100200
51121121403022
651132053200
710543461321
oct2261572040
9727702780
10315028512
11151909647
1289604200
1350360406
142dba6448
151c9cbbac
hex12c6f420

315028512 has 72 divisors (see below), whose sum is σ = 943029360. Its totient is φ = 99480960.

The previous prime is 315028489. The next prime is 315028517. The reversal of 315028512 is 215820513.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-3 number, since 3×3150285123 (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (315028517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23314 + ... + 34257.

It is an arithmetic number, because the mean of its divisors is an integer number (13097630).

Almost surely, 2315028512 is an apocalyptic number.

315028512 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

315028512 is an abundant number, since it is smaller than the sum of its proper divisors (628000848).

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

315028512 is a wasteful number, since it uses less digits than its factorization.

315028512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57606 (or 57595 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 315028512 is about 17749.0425657273. The cubic root of 315028512 is about 680.4297398939.

The spelling of 315028512 in words is "three hundred fifteen million, twenty-eight thousand, five hundred twelve".

Divisors: 1 2 3 4 6 8 9 12 16 18 19 24 32 36 38 48 57 72 76 96 114 144 152 171 228 288 304 342 456 608 684 912 1368 1824 2736 5472 57571 115142 172713 230284 345426 460568 518139 690852 921136 1036278 1093849 1381704 1842272 2072556 2187698 2763408 3281547 4145112 4375396 5526816 6563094 8290224 8750792 9844641 13126188 16580448 17501584 19689282 26252376 35003168 39378564 52504752 78757128 105009504 157514256 315028512