12720672 has 48 divisors (see below), whose sum is σ = 37104480. Its totient is φ = 4239936.

The previous prime is 12720649. The next prime is 12720707. The reversal of 12720672 is 27602721.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×12720672² = 323630992263168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6498 + ... + 8225.

It is an arithmetic number, because the mean of its divisors is an integer number (773010).

Almost surely, 2^12720672 is an apocalyptic number.

12720672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12720672 is an abundant number, since it is smaller than the sum of its proper divisors (24383808).

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

12720672 is a wasteful number, since it uses less digits than its factorization.

12720672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14742 (or 14728 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 12720672 is about 3566.6051085030. The cubic root of 12720672 is about 233.4371746419.

The spelling of 12720672 in words is "twelve million, seven hundred twenty thousand, six hundred seventy-two".