78749256 has 32 divisors (see below), whose sum is σ = 198908640. Its totient is φ = 25978368.

The previous prime is 78749227. The next prime is 78749273. The reversal of 78749256 is 65294787.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14586 + ... + 19241.

It is an arithmetic number, because the mean of its divisors is an integer number (6215895).

Almost surely, 2^78749256 is an apocalyptic number.

It is an amenable number.

78749256 is an abundant number, since it is smaller than the sum of its proper divisors (120159384).

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

78749256 is a wasteful number, since it uses less digits than its factorization.

78749256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33933 (or 33929 counting only the distinct ones).

The product of its digits is 846720, while the sum is 48.

The square root of 78749256 is about 8874.0777548994. The cubic root of 78749256 is about 428.6295942641.

The spelling of 78749256 in words is "seventy-eight million, seven hundred forty-nine thousand, two hundred fifty-six".