72522230 has 32 divisors (see below), whose sum is σ = 142767360. Its totient is φ = 26305120.

The previous prime is 72522227. The next prime is 72522251. The reversal of 72522230 is 3222527.

It is a junction number, because it is equal to n+sod(n) for n = 72522196 and 72522205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70661 + ... + 71679.

It is an arithmetic number, because the mean of its divisors is an integer number (4461480).

Almost surely, 2^72522230 is an apocalyptic number.

72522230 is a deficient number, since it is larger than the sum of its proper divisors (70245130).

72522230 is a wasteful number, since it uses less digits than its factorization.

72522230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 72522230 is about 8515.9984734616. The cubic root of 72522230 is about 417.0201593959.

Adding to 72522230 its reverse (3222527), we get a palindrome (75744757).

The spelling of 72522230 in words is "seventy-two million, five hundred twenty-two thousand, two hundred thirty".