12972406 has 16 divisors (see below), whose sum is σ = 19926720. Its totient is φ = 6332040.

The previous prime is 12972371. The next prime is 12972457. The reversal of 12972406 is 60427921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17185 + ... + 17923.

It is an arithmetic number, because the mean of its divisors is an integer number (1245420).

Almost surely, 2^12972406 is an apocalyptic number.

12972406 is a deficient number, since it is larger than the sum of its proper divisors (6954314).

12972406 is a wasteful number, since it uses less digits than its factorization.

12972406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 12972406 is about 3601.7226434027. The cubic root of 12972406 is about 234.9669849500.

The spelling of 12972406 in words is "twelve million, nine hundred seventy-two thousand, four hundred six".