12720862 has 64 divisors (see below), whose sum is σ = 26002944. Its totient is φ = 4515840.

The previous prime is 12720847. The next prime is 12720887. The reversal of 12720862 is 26802721.

12720862 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12720862.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112518 + ... + 112630.

It is an arithmetic number, because the mean of its divisors is an integer number (406296).

Almost surely, 2^12720862 is an apocalyptic number.

12720862 is an abundant number, since it is smaller than the sum of its proper divisors (13282082).

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

12720862 is a wasteful number, since it uses less digits than its factorization.

12720862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 12720862 is about 3566.6317443773. The cubic root of 12720862 is about 233.4383368667.

The spelling of 12720862 in words is "twelve million, seven hundred twenty thousand, eight hundred sixty-two".