72683331 has 16 divisors (see below), whose sum is σ = 111341568. Its totient is φ = 41313600.

The previous prime is 72683321. The next prime is 72683353. The reversal of 72683331 is 13338627.

It is not a de Polignac number, because 72683331 - 2⁷ = 72683203 is a prime.

It is a super-2 number, since 2×72683331² = 10565733210511122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72683292 and 72683301.

It is not an unprimeable number, because it can be changed into a prime (72683311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5050 + ... + 13071.

It is an arithmetic number, because the mean of its divisors is an integer number (6958848).

Almost surely, 2^72683331 is an apocalyptic number.

72683331 is a deficient number, since it is larger than the sum of its proper divisors (38658237).

72683331 is a wasteful number, since it uses less digits than its factorization.

72683331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18322.

The product of its digits is 18144, while the sum is 33.

The square root of 72683331 is about 8525.4519528292. The cubic root of 72683331 is about 417.3287207830.

The spelling of 72683331 in words is "seventy-two million, six hundred eighty-three thousand, three hundred thirty-one".