73139764 has 12 divisors (see below), whose sum is σ = 128130688. Its totient is φ = 36531000.

The previous prime is 73139761. The next prime is 73139783. The reversal of 73139764 is 46793137.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73139761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5262 + ... + 13189.

Almost surely, 2^73139764 is an apocalyptic number.

It is an amenable number.

73139764 is a deficient number, since it is larger than the sum of its proper divisors (54990924).

73139764 is a wasteful number, since it uses less digits than its factorization.

73139764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19446 (or 19444 counting only the distinct ones).

The product of its digits is 95256, while the sum is 40.

The square root of 73139764 is about 8552.1789036479. The cubic root of 73139764 is about 418.2004715916.

The spelling of 73139764 in words is "seventy-three million, one hundred thirty-nine thousand, seven hundred sixty-four".