531978760 has 32 divisors (see below), whose sum is σ = 1200432960. Its totient is φ = 212172736.

The previous prime is 531978737. The next prime is 531978761. The reversal of 531978760 is 67879135.

It is a super-2 number, since 2×531978760² = 566002802182275200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 531978760.

It is not an unprimeable number, because it can be changed into a prime (531978761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5284 + ... + 33043.

It is an arithmetic number, because the mean of its divisors is an integer number (37513530).

Almost surely, 2^531978760 is an apocalyptic number.

It is an amenable number.

531978760 is an abundant number, since it is smaller than the sum of its proper divisors (668454200).

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

531978760 is a wasteful number, since it uses less digits than its factorization.

531978760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38685 (or 38681 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 531978760 is about 23064.6647493520. The cubic root of 531978760 is about 810.2731182834.

The spelling of 531978760 in words is "five hundred thirty-one million, nine hundred seventy-eight thousand, seven hundred sixty".