74438790 has 16 divisors (see below), whose sum is σ = 178653168. Its totient is φ = 19850336.

The previous prime is 74438779. The next prime is 74438803. The reversal of 74438790 is 9783447.

It is a super-2 number, since 2×74438790² = 11082266913328200, 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, 1240617 + ... + 1240676.

It is an arithmetic number, because the mean of its divisors is an integer number (11165823).

Almost surely, 2^74438790 is an apocalyptic number.

74438790 is an abundant number, since it is smaller than the sum of its proper divisors (104214378).

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

74438790 is a wasteful number, since it uses less digits than its factorization.

74438790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481303.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 74438790 is about 8627.7917221036. The cubic root of 74438790 is about 420.6618250463.

The spelling of 74438790 in words is "seventy-four million, four hundred thirty-eight thousand, seven hundred ninety".