74912478 has 16 divisors (see below), whose sum is σ = 157710720. Its totient is φ = 23656536.

The previous prime is 74912443. The next prime is 74912483. The reversal of 74912478 is 87421947.

It is a happy number.

It is a super-2 number, since 2×74912478² = 11223758720200968, which contains 22 as substring.

It is a Curzon number.

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, 328450 + ... + 328677.

It is an arithmetic number, because the mean of its divisors is an integer number (9856920).

Almost surely, 2^74912478 is an apocalyptic number.

74912478 is an abundant number, since it is smaller than the sum of its proper divisors (82798242).

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

74912478 is a wasteful number, since it uses less digits than its factorization.

74912478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657151.

The product of its digits is 112896, while the sum is 42.

The square root of 74912478 is about 8655.1994777706. The cubic root of 74912478 is about 421.5522267688.

The spelling of 74912478 in words is "seventy-four million, nine hundred twelve thousand, four hundred seventy-eight".