74402590 has 16 divisors (see below), whose sum is σ = 135111888. Its totient is φ = 29497216.

The previous prime is 74402567. The next prime is 74402593. The reversal of 74402590 is 9520447.

It is a super-3 number, since 3×74402590³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74402593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31792 + ... + 34051.

It is an arithmetic number, because the mean of its divisors is an integer number (8444493).

Almost surely, 2^74402590 is an apocalyptic number.

74402590 is a deficient number, since it is larger than the sum of its proper divisors (60709298).

74402590 is a wasteful number, since it uses less digits than its factorization.

74402590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65963.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 74402590 is about 8625.6935953000. The cubic root of 74402590 is about 420.5936239233.

The spelling of 74402590 in words is "seventy-four million, four hundred two thousand, five hundred ninety".