12984728 has 8 divisors (see below), whose sum is σ = 24346380. Its totient is φ = 6492360.

The previous prime is 12984709. The next prime is 12984731. The reversal of 12984728 is 82748921.

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

It is a super-2 number, since 2×12984728² = 337206322467968, which contains 22 as substring.

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, 811538 + ... + 811553.

Almost surely, 2^12984728 is an apocalyptic number.

It is an amenable number.

12984728 is a deficient number, since it is larger than the sum of its proper divisors (11361652).

12984728 is a wasteful number, since it uses less digits than its factorization.

12984728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623097 (or 1623093 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 12984728 is about 3603.4328077543. The cubic root of 12984728 is about 235.0413568378.

The spelling of 12984728 in words is "twelve million, nine hundred eighty-four thousand, seven hundred twenty-eight".