12928312 has 8 divisors (see below), whose sum is σ = 24240600. Its totient is φ = 6464152.

The previous prime is 12928301. The next prime is 12928327. The reversal of 12928312 is 21382921.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

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, 808012 + ... + 808027.

It is an arithmetic number, because the mean of its divisors is an integer number (3030075).

Almost surely, 2^12928312 is an apocalyptic number.

It is an amenable number.

12928312 is a deficient number, since it is larger than the sum of its proper divisors (11312288).

12928312 is a wasteful number, since it uses less digits than its factorization.

12928312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616045 (or 1616041 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

The square root of 12928312 is about 3595.5961953479. The cubic root of 12928312 is about 234.7004603680.

It can be divided in two parts, 1292 and 8312, that added together give a square (9604 = 98²).

The spelling of 12928312 in words is "twelve million, nine hundred twenty-eight thousand, three hundred twelve".