76521972 has 24 divisors (see below), whose sum is σ = 178813600. Its totient is φ = 25469856.

The previous prime is 76521971. The next prime is 76522003. The reversal of 76521972 is 27912567.

It is a super-2 number, since 2×76521972² = 11711224397537568, 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 76521972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76521971) 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, 4554 + ... + 13182.

Almost surely, 2^76521972 is an apocalyptic number.

It is an amenable number.

76521972 is an abundant number, since it is smaller than the sum of its proper divisors (102291628).

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

76521972 is a wasteful number, since it uses less digits than its factorization.

76521972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9375 (or 9373 counting only the distinct ones).

The product of its digits is 52920, while the sum is 39.

The square root of 76521972 is about 8747.6838077288. The cubic root of 76521972 is about 424.5498754524.

The spelling of 76521972 in words is "seventy-six million, five hundred twenty-one thousand, nine hundred seventy-two".