12804720 has 40 divisors (see below), whose sum is σ = 39695376. Its totient is φ = 3414528.

The previous prime is 12804719. The next prime is 12804731. The reversal of 12804720 is 2740821.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 26437 + ... + 26916.

Almost surely, 2^12804720 is an apocalyptic number.

12804720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12804720 is an abundant number, since it is smaller than the sum of its proper divisors (26890656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12804720 is a wasteful number, since it uses less digits than its factorization.

12804720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53369 (or 53363 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 12804720 is about 3578.3683432537. The cubic root of 12804720 is about 233.9501683646.

The spelling of 12804720 in words is "twelve million, eight hundred four thousand, seven hundred twenty".