72743344 has 20 divisors (see below), whose sum is σ = 141878320. Its totient is φ = 36129600.

The previous prime is 72743317. The next prime is 72743351. The reversal of 72743344 is 44334727.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12639 + ... + 17470.

It is an arithmetic number, because the mean of its divisors is an integer number (7093916).

Almost surely, 2^72743344 is an apocalyptic number.

It is an amenable number.

72743344 is a deficient number, since it is larger than the sum of its proper divisors (69134976).

72743344 is a wasteful number, since it uses less digits than its factorization.

72743344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30268 (or 30262 counting only the distinct ones).

The product of its digits is 56448, while the sum is 34.

The square root of 72743344 is about 8528.9708640609. The cubic root of 72743344 is about 417.4435488473.

The spelling of 72743344 in words is "seventy-two million, seven hundred forty-three thousand, three hundred forty-four".