12749172 has 24 divisors (see below), whose sum is σ = 29811936. Its totient is φ = 4240608.

The previous prime is 12749159. The next prime is 12749179. The reversal of 12749172 is 27194721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12749179) 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, 7023 + ... + 8649.

It is an arithmetic number, because the mean of its divisors is an integer number (1242164).

Almost surely, 2^12749172 is an apocalyptic number.

12749172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12749172 is an abundant number, since it is smaller than the sum of its proper divisors (17062764).

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

12749172 is a wasteful number, since it uses less digits than its factorization.

12749172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287 (or 2285 counting only the distinct ones).

The product of its digits is 7056, while the sum is 33.

The square root of 12749172 is about 3570.5982691980. The cubic root of 12749172 is about 233.6113791995.

It can be divided in two parts, 12749 and 172, that added together give a palindrome (12921).

The spelling of 12749172 in words is "twelve million, seven hundred forty-nine thousand, one hundred seventy-two".