73687138 has 16 divisors (see below), whose sum is σ = 126432000. Its totient is φ = 31552416.

The previous prime is 73687123. The next prime is 73687139. The reversal of 73687138 is 83178637.

It is a junction number, because it is equal to n+sod(n) for n = 73687094 and 73687103.

It is not an unprimeable number, because it can be changed into a prime (73687139) 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, 26670 + ... + 29302.

It is an arithmetic number, because the mean of its divisors is an integer number (7902000).

Almost surely, 2^73687138 is an apocalyptic number.

73687138 is a deficient number, since it is larger than the sum of its proper divisors (52744862).

73687138 is a wasteful number, since it uses less digits than its factorization.

73687138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4641.

The product of its digits is 169344, while the sum is 43.

The square root of 73687138 is about 8584.1212712776. The cubic root of 73687138 is about 419.2411429485.

The spelling of 73687138 in words is "seventy-three million, six hundred eighty-seven thousand, one hundred thirty-eight".