12572220 has 48 divisors (see below), whose sum is σ = 35366688. Its totient is φ = 3336960.

The previous prime is 12572207. The next prime is 12572233. The reversal of 12572220 is 2227521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12572207) and next prime (12572233).

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, 18690 + ... + 19350.

It is an arithmetic number, because the mean of its divisors is an integer number (736806).

Almost surely, 2^12572220 is an apocalyptic number.

12572220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12572220 is an abundant number, since it is smaller than the sum of its proper divisors (22794468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12572220 is a wasteful number, since it uses less digits than its factorization.

12572220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 988 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 12572220 is about 3545.7326464357. The cubic root of 12572220 is about 232.5255377198.

Adding to 12572220 its reverse (2227521), we get a palindrome (14799741).

The spelling of 12572220 in words is "twelve million, five hundred seventy-two thousand, two hundred twenty".