72830331 has 12 divisors (see below), whose sum is σ = 120227952. Its totient is φ = 41617296.

The previous prime is 72830327. The next prime is 72830341. The reversal of 72830331 is 13303827.

It is not a de Polignac number, because 72830331 - 2² = 72830327 is a prime.

It is a super-2 number, since 2×72830331² = 10608514227139122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72830295 and 72830304.

It is not an unprimeable number, because it can be changed into a prime (72830311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 577956 + ... + 578081.

It is an arithmetic number, because the mean of its divisors is an integer number (10018996).

Almost surely, 2^72830331 is an apocalyptic number.

72830331 is a deficient number, since it is larger than the sum of its proper divisors (47397621).

72830331 is a wasteful number, since it uses less digits than its factorization.

72830331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156050 (or 1156047 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 72830331 is about 8534.0688420003. The cubic root of 72830331 is about 417.6098765390.

The spelling of 72830331 in words is "seventy-two million, eight hundred thirty thousand, three hundred thirty-one".