73536138 has 24 divisors (see below), whose sum is σ = 171584868. Its totient is φ = 22626432.

The previous prime is 73536097. The next prime is 73536163. The reversal of 73536138 is 83163537.

73536138 is a `hidden beast` number, since 7 + 35 + 3 + 613 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 63632529 + 9903609 = 7977^2 + 3147^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156895 + ... + 157362.

Almost surely, 2^73536138 is an apocalyptic number.

73536138 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

73536138 is an abundant number, since it is smaller than the sum of its proper divisors (98048730).

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

73536138 is a wasteful number, since it uses less digits than its factorization.

73536138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314278 (or 314275 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 73536138 is about 8575.3214517008. The cubic root of 73536138 is about 418.9545768642.

The spelling of 73536138 in words is "seventy-three million, five hundred thirty-six thousand, one hundred thirty-eight".