72728353 has 8 divisors (see below), whose sum is σ = 73906560. Its totient is φ = 71554560.

The previous prime is 72728321. The next prime is 72728377. The reversal of 72728353 is 35382727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72728353 - 2⁵ = 72728321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72728053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50913 + ... + 52321.

It is an arithmetic number, because the mean of its divisors is an integer number (9238320).

Almost surely, 2^72728353 is an apocalyptic number.

It is an amenable number.

72728353 is a deficient number, since it is larger than the sum of its proper divisors (1178207).

72728353 is a wasteful number, since it uses less digits than its factorization.

72728353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207.

The product of its digits is 70560, while the sum is 37.

The square root of 72728353 is about 8528.0919905920. The cubic root of 72728353 is about 417.4148711896.

It can be divided in two parts, 7272 and 8353, that added together give a 6-th power (15625 = 5⁶).

The spelling of 72728353 in words is "seventy-two million, seven hundred twenty-eight thousand, three hundred fifty-three".