78772836 has 24 divisors (see below), whose sum is σ = 184542624. Its totient is φ = 26152000.

The previous prime is 78772831. The next prime is 78772901. The reversal of 78772836 is 63827787.

It is not an unprimeable number, because it can be changed into a prime (78772831) 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, 10065 + ... + 16088.

It is an arithmetic number, because the mean of its divisors is an integer number (7689276).

Almost surely, 2^78772836 is an apocalyptic number.

It is an amenable number.

78772836 is an abundant number, since it is smaller than the sum of its proper divisors (105769788).

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

78772836 is a wasteful number, since it uses less digits than its factorization.

78772836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26411 (or 26409 counting only the distinct ones).

The product of its digits is 790272, while the sum is 48.

The square root of 78772836 is about 8875.4062442234. The cubic root of 78772836 is about 428.6723717147.

The spelling of 78772836 in words is "seventy-eight million, seven hundred seventy-two thousand, eight hundred thirty-six".