72956229 has 4 divisors (see below), whose sum is σ = 97274976. Its totient is φ = 48637484.

The previous prime is 72956227. The next prime is 72956291. The reversal of 72956229 is 92265927.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72956229 - 2¹ = 72956227 is a prime.

It is a super-2 number, since 2×72956229² = 10645222699800882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72956227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12159369 + ... + 12159374.

It is an arithmetic number, because the mean of its divisors is an integer number (24318744).

Almost surely, 2^72956229 is an apocalyptic number.

It is an amenable number.

72956229 is a deficient number, since it is larger than the sum of its proper divisors (24318747).

72956229 is a wasteful number, since it uses less digits than its factorization.

72956229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24318746.

The product of its digits is 136080, while the sum is 42.

The square root of 72956229 is about 8541.4418572042. The cubic root of 72956229 is about 417.8503714963.

The spelling of 72956229 in words is "seventy-two million, nine hundred fifty-six thousand, two hundred twenty-nine".