73138635 has 12 divisors (see below), whose sum is σ = 126773712. Its totient is φ = 39007248.

The previous prime is 73138567. The next prime is 73138649. The reversal of 73138635 is 53683137.

73138635 is a `hidden beast` number, since 7 + 3 + 13 + 8 + 635 = 666.

It is not a de Polignac number, because 73138635 - 2⁹ = 73138123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73138635.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 812607 + ... + 812696.

It is an arithmetic number, because the mean of its divisors is an integer number (10564476).

Almost surely, 2^73138635 is an apocalyptic number.

73138635 is a deficient number, since it is larger than the sum of its proper divisors (53635077).

73138635 is a wasteful number, since it uses less digits than its factorization.

73138635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625314 (or 1625311 counting only the distinct ones).

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

The square root of 73138635 is about 8552.1128968226. The cubic root of 73138635 is about 418.1983197719.

The spelling of 73138635 in words is "seventy-three million, one hundred thirty-eight thousand, six hundred thirty-five".