12572172 has 30 divisors (see below), whose sum is σ = 32866988. Its totient is φ = 4190616.

The previous prime is 12572159. The next prime is 12572207. The reversal of 12572172 is 27127521.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19078 + ... + 19725.

Almost surely, 2^12572172 is an apocalyptic number.

12572172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12572172 is an abundant number, since it is smaller than the sum of its proper divisors (20294816).

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

12572172 is a wasteful number, since it uses less digits than its factorization.

12572172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38819 (or 38808 counting only the distinct ones).

The product of its digits is 1960, while the sum is 27.

The square root of 12572172 is about 3545.7258777294. The cubic root of 12572172 is about 232.5252417964.

Adding to 12572172 its reverse (27127521), we get a palindrome (39699693).

The spelling of 12572172 in words is "twelve million, five hundred seventy-two thousand, one hundred seventy-two".