977987152 has 40 divisors (see below), whose sum is σ = 2111918400. Its totient is φ = 436004352.

The previous prime is 977987149. The next prime is 977987159. The reversal of 977987152 is 251789779.

It is a super-2 number, since 2×977987152² = 1912917738954142208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 977987093 and 977987102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977987159) 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, 89452 + ... + 99787.

It is an arithmetic number, because the mean of its divisors is an integer number (52797960).

Almost surely, 2^977987152 is an apocalyptic number.

It is an amenable number.

977987152 is an abundant number, since it is smaller than the sum of its proper divisors (1133931248).

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

977987152 is a wasteful number, since it uses less digits than its factorization.

977987152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189283 (or 189277 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 55.

The square root of 977987152 is about 31272.7861246804. The cubic root of 977987152 is about 992.6078751338.

The spelling of 977987152 in words is "nine hundred seventy-seven million, nine hundred eighty-seven thousand, one hundred fifty-two".