77928264 has 32 divisors (see below), whose sum is σ = 216468000. Its totient is φ = 25976016.

The previous prime is 77928259. The next prime is 77928271. The reversal of 77928264 is 46282977.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180174 + ... + 180605.

It is an arithmetic number, because the mean of its divisors is an integer number (6764625).

Almost surely, 2^77928264 is an apocalyptic number.

It is an amenable number.

77928264 is an abundant number, since it is smaller than the sum of its proper divisors (138539736).

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

77928264 is a wasteful number, since it uses less digits than its factorization.

77928264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360794 (or 360784 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 77928264 is about 8827.6986808567. The cubic root of 77928264 is about 427.1348436167.

The spelling of 77928264 in words is "seventy-seven million, nine hundred twenty-eight thousand, two hundred sixty-four".