12572218 has 16 divisors (see below), whose sum is σ = 19514880. Its totient is φ = 6070896.

The previous prime is 12572207. The next prime is 12572233. The reversal of 12572218 is 81227521.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6580 + ... + 8272.

It is an arithmetic number, because the mean of its divisors is an integer number (1219680).

Almost surely, 2^12572218 is an apocalyptic number.

12572218 is a deficient number, since it is larger than the sum of its proper divisors (6942662).

12572218 is a wasteful number, since it uses less digits than its factorization.

12572218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821.

The product of its digits is 2240, while the sum is 28.

The square root of 12572218 is about 3545.7323644065. The cubic root of 12572218 is about 232.5255253896.

Adding to 12572218 its reverse (81227521), we get a palindrome (93799739).

The spelling of 12572218 in words is "twelve million, five hundred seventy-two thousand, two hundred eighteen".