74893638 has 16 divisors (see below), whose sum is σ = 150060096. Its totient is φ = 24919080.

The previous prime is 74893627. The next prime is 74893667. The reversal of 74893638 is 83639847.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7708 + ... + 14463.

It is an arithmetic number, because the mean of its divisors is an integer number (9378756).

Almost surely, 2^74893638 is an apocalyptic number.

74893638 is an abundant number, since it is smaller than the sum of its proper divisors (75166458).

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

74893638 is a wasteful number, since it uses less digits than its factorization.

74893638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22739.

The product of its digits is 870912, while the sum is 48.

The square root of 74893638 is about 8654.1110462023. Note that the first 3 decimals coincide. The cubic root of 74893638 is about 421.5168845933.

The spelling of 74893638 in words is "seventy-four million, eight hundred ninety-three thousand, six hundred thirty-eight".