77042992 has 20 divisors (see below), whose sum is σ = 160753600. Its totient is φ = 35558208.

The previous prime is 77042989. The next prime is 77043013. The reversal of 77042992 is 29924077.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184992 + ... + 185407.

It is an arithmetic number, because the mean of its divisors is an integer number (8037680).

Almost surely, 2^77042992 is an apocalyptic number.

It is an amenable number.

77042992 is an abundant number, since it is smaller than the sum of its proper divisors (83710608).

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

77042992 is a wasteful number, since it uses less digits than its factorization.

77042992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370420 (or 370414 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 77042992 is about 8777.4137420997. The cubic root of 77042992 is about 425.5112500322.

The spelling of 77042992 in words is "seventy-seven million, forty-two thousand, nine hundred ninety-two".