72979814 has 16 divisors (see below), whose sum is σ = 113702400. Its totient is φ = 35105544.

The previous prime is 72979813. The next prime is 72979843. The reversal of 72979814 is 41897927.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72979813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1034 + ... + 12125.

It is an arithmetic number, because the mean of its divisors is an integer number (7106400).

Almost surely, 2^72979814 is an apocalyptic number.

72979814 is a deficient number, since it is larger than the sum of its proper divisors (40722586).

72979814 is a wasteful number, since it uses less digits than its factorization.

72979814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13267.

The product of its digits is 254016, while the sum is 47.

The square root of 72979814 is about 8542.8223673444. The cubic root of 72979814 is about 417.8953936480.

The spelling of 72979814 in words is "seventy-two million, nine hundred seventy-nine thousand, eight hundred fourteen".