73972990428 has 48 divisors (see below), whose sum is σ = 177579682560. Its totient is φ = 23956884864.

The previous prime is 73972990397. The next prime is 73972990457. The reversal of 73972990428 is 82409927937.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571488 + ... + 688871.

It is an arithmetic number, because the mean of its divisors is an integer number (3699576720).

Almost surely, 2^73972990428 is an apocalyptic number.

It is an amenable number.

73972990428 is an abundant number, since it is smaller than the sum of its proper divisors (103606692132).

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

73972990428 is a wasteful number, since it uses less digits than its factorization.

73972990428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260506 (or 1260504 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 60.

The spelling of 73972990428 in words is "seventy-three billion, nine hundred seventy-two million, nine hundred ninety thousand, four hundred twenty-eight".