78367974 has 16 divisors (see below), whose sum is σ = 160559280. Its totient is φ = 25485440.

The previous prime is 78367967. The next prime is 78367987. The reversal of 78367974 is 47976387.

It is a super-2 number, since 2×78367974² = 12283078697729352, which contains 22 as substring.

It is a congruent number.

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, 159039 + ... + 159530.

It is an arithmetic number, because the mean of its divisors is an integer number (10034955).

Almost surely, 2^78367974 is an apocalyptic number.

78367974 is an abundant number, since it is smaller than the sum of its proper divisors (82191306).

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

78367974 is a wasteful number, since it uses less digits than its factorization.

78367974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318615.

The product of its digits is 1778112, while the sum is 51.

The square root of 78367974 is about 8852.5687797385. The cubic root of 78367974 is about 427.9367063653.

The spelling of 78367974 in words is "seventy-eight million, three hundred sixty-seven thousand, nine hundred seventy-four".