12972416 has 16 divisors (see below), whose sum is σ = 25843740. Its totient is φ = 6486144.

The previous prime is 12972371. The next prime is 12972457. The reversal of 12972416 is 61427921.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50546 + ... + 50801.

Almost surely, 2^12972416 is an apocalyptic number.

12972416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12972416 is a deficient number, since it is larger than the sum of its proper divisors (12871324).

12972416 is an equidigital number, since it uses as much as digits as its factorization.

12972416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101361 (or 101349 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 12972416 is about 3601.7240316271. The cubic root of 12972416 is about 234.9670453261.

The spelling of 12972416 in words is "twelve million, nine hundred seventy-two thousand, four hundred sixteen".