73978512 has 40 divisors (see below), whose sum is σ = 191523456. Its totient is φ = 24606336.

The previous prime is 73978477. The next prime is 73978537. The reversal of 73978512 is 21587937.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25353 + ... + 28119.

Almost surely, 2^73978512 is an apocalyptic number.

It is an amenable number.

73978512 is an abundant number, since it is smaller than the sum of its proper divisors (117544944).

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

73978512 is a wasteful number, since it uses less digits than its factorization.

73978512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3335 (or 3329 counting only the distinct ones).

The product of its digits is 105840, while the sum is 42.

The square root of 73978512 is about 8601.0762117307. The cubic root of 73978512 is about 419.7930045758.

The spelling of 73978512 in words is "seventy-three million, nine hundred seventy-eight thousand, five hundred twelve".