72354931 has 8 divisors (see below), whose sum is σ = 79370928. Its totient is φ = 65412000.

The previous prime is 72354923. The next prime is 72354959. The reversal of 72354931 is 13945327.

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 72354931 - 2³ = 72354923 is a prime.

It is a super-2 number, since 2×72354931² = 10470472080029522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72354901) 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, 16180 + ... + 20161.

It is an arithmetic number, because the mean of its divisors is an integer number (9921366).

Almost surely, 2^72354931 is an apocalyptic number.

72354931 is a deficient number, since it is larger than the sum of its proper divisors (7015997).

72354931 is a wasteful number, since it uses less digits than its factorization.

72354931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36533.

The product of its digits is 22680, while the sum is 34.

The square root of 72354931 is about 8506.1701722926. The cubic root of 72354931 is about 416.6992427508.

The spelling of 72354931 in words is "seventy-two million, three hundred fifty-four thousand, nine hundred thirty-one".