78899264 has 14 divisors (see below), whose sum is σ = 156565854. Its totient is φ = 39449600.

The previous prime is 78899263. The next prime is 78899273. The reversal of 78899264 is 46299887.

It can be written as a sum of positive squares in only one way, i.e., 77440000 + 1459264 = 8800^2 + 1208^2 .

It is not an unprimeable number, because it can be changed into a prime (78899263) by changing a digit.

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 as a sum of consecutive naturals, namely, 616337 + ... + 616464.

Almost surely, 2^78899264 is an apocalyptic number.

It is an amenable number.

78899264 is a deficient number, since it is larger than the sum of its proper divisors (77666590).

78899264 is a wasteful number, since it uses less digits than its factorization.

78899264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232813 (or 1232803 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 53.

The square root of 78899264 is about 8882.5257669201. The cubic root of 78899264 is about 428.9015844940.

The spelling of 78899264 in words is "seventy-eight million, eight hundred ninety-nine thousand, two hundred sixty-four".