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528931 = 13232961
BaseRepresentation
bin10000001001000100011
3222212120001
42001020203
5113411211
615200431
74332034
oct2011043
9885501
10528931
11331437
12216117
131569a0
14daa8b
15a6ac1
hex81223

528931 has 16 divisors (see below), whose sum is σ = 624960. Its totient is φ = 443520.

The previous prime is 528929. The next prime is 528947. The reversal of 528931 is 139825.

It is a cyclic number.

It is not a de Polignac number, because 528931 - 21 = 528929 is a prime.

It is a super-2 number, since 2×5289312 = 559536005522, which contains 22 as substring.

It is a Duffinian number.

528931 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 528931.

It is not an unprimeable number, because it can be changed into a prime (528911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8641 + ... + 8701.

It is an arithmetic number, because the mean of its divisors is an integer number (39060).

2528931 is an apocalyptic number.

528931 is a deficient number, since it is larger than the sum of its proper divisors (96029).

528931 is a wasteful number, since it uses less digits than its factorization.

528931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126.

The product of its digits is 2160, while the sum is 28.

The square root of 528931 is about 727.2764261270. The cubic root of 528931 is about 80.8722774991.

The spelling of 528931 in words is "five hundred twenty-eight thousand, nine hundred thirty-one".

Divisors: 1 13 23 29 61 299 377 667 793 1403 1769 8671 18239 22997 40687 528931