12972757 has 16 divisors (see below), whose sum is σ = 15344640. Its totient is φ = 10737792.

The previous prime is 12972737. The next prime is 12972781. The reversal of 12972757 is 75727921.

It is a happy number.

12972757 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12972757 - 2⁷ = 12972629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12972737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26844 + ... + 27322.

It is an arithmetic number, because the mean of its divisors is an integer number (959040).

Almost surely, 2^12972757 is an apocalyptic number.

It is an amenable number.

12972757 is a deficient number, since it is larger than the sum of its proper divisors (2371883).

12972757 is an equidigital number, since it uses as much as digits as its factorization.

12972757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612.

The product of its digits is 61740, while the sum is 40.

The square root of 12972757 is about 3601.7713697568. The cubic root of 12972757 is about 234.9691041320.

The spelling of 12972757 in words is "twelve million, nine hundred seventy-two thousand, seven hundred fifty-seven".