72793990 has 24 divisors (see below), whose sum is σ = 132662160. Its totient is φ = 28759104.

The previous prime is 72793979. The next prime is 72793993. The reversal of 72793990 is 9939727.

It is a self number, because there is not a number n which added to its sum of digits gives 72793990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72793993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78751 + ... + 79669.

It is an arithmetic number, because the mean of its divisors is an integer number (5527590).

Almost surely, 2^72793990 is an apocalyptic number.

72793990 is a deficient number, since it is larger than the sum of its proper divisors (59868170).

72793990 is an equidigital number, since it uses as much as digits as its factorization.

72793990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104 (or 1015 counting only the distinct ones).

The product of its (nonzero) digits is 214326, while the sum is 46.

The square root of 72793990 is about 8531.9394043793. The cubic root of 72793990 is about 417.5404050919.

The spelling of 72793990 in words is "seventy-two million, seven hundred ninety-three thousand, nine hundred ninety".