74139536 has 20 divisors (see below), whose sum is σ = 144001200. Its totient is φ = 36977952.

The previous prime is 74139529. The next prime is 74139547. The reversal of 74139536 is 63593147.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 74139536.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1175 + ... + 12233.

It is an arithmetic number, because the mean of its divisors is an integer number (7200060).

Almost surely, 2^74139536 is an apocalyptic number.

It is an amenable number.

74139536 is a deficient number, since it is larger than the sum of its proper divisors (69861664).

74139536 is a wasteful number, since it uses less digits than its factorization.

74139536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11486 (or 11480 counting only the distinct ones).

The product of its digits is 68040, while the sum is 38.

The square root of 74139536 is about 8610.4318126329. The cubic root of 74139536 is about 420.0973621599.

The spelling of 74139536 in words is "seventy-four million, one hundred thirty-nine thousand, five hundred thirty-six".