78974790 has 16 divisors (see below), whose sum is σ = 189539568. Its totient is φ = 21059936.

The previous prime is 78974759. The next prime is 78974803. The reversal of 78974790 is 9747987.

It is a super-3 number, since 3×78974790³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1316217 + ... + 1316276.

It is an arithmetic number, because the mean of its divisors is an integer number (11846223).

Almost surely, 2^78974790 is an apocalyptic number.

78974790 is an abundant number, since it is smaller than the sum of its proper divisors (110564778).

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

78974790 is a wasteful number, since it uses less digits than its factorization.

78974790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632503.

The product of its (nonzero) digits is 889056, while the sum is 51.

The square root of 78974790 is about 8886.7761308587. The cubic root of 78974790 is about 429.0383956159.

The spelling of 78974790 in words is "seventy-eight million, nine hundred seventy-four thousand, seven hundred ninety".