82572238 has 16 divisors (see below), whose sum is σ = 141678720. Its totient is φ = 35356536.

The previous prime is 82572227. The next prime is 82572239. The reversal of 82572238 is 83227528.

It is a junction number, because it is equal to n+sod(n) for n = 82572197 and 82572206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82572239) 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, 20845 + ... + 24487.

It is an arithmetic number, because the mean of its divisors is an integer number (8854920).

Almost surely, 2^82572238 is an apocalyptic number.

82572238 is a deficient number, since it is larger than the sum of its proper divisors (59106482).

82572238 is a wasteful number, since it uses less digits than its factorization.

82572238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5271.

The product of its digits is 53760, while the sum is 37.

The square root of 82572238 is about 9086.9267632132. The cubic root of 82572238 is about 435.4564073869.

The spelling of 82572238 in words is "eighty-two million, five hundred seventy-two thousand, two hundred thirty-eight".