12700880 has 20 divisors (see below), whose sum is σ = 29529732. Its totient is φ = 5080320.

The previous prime is 12700837. The next prime is 12700901. The reversal of 12700880 is 8800721.

It can be written as a sum of positive squares in 2 ways, for example, as 2383936 + 10316944 = 1544^2 + 3212^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×12700880² = 322624705548800, 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 in 3 ways as a sum of consecutive naturals, for example, 79301 + ... + 79460.

Almost surely, 2^12700880 is an apocalyptic number.

12700880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12700880 is an abundant number, since it is smaller than the sum of its proper divisors (16828852).

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

12700880 is a wasteful number, since it uses less digits than its factorization.

12700880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158774 (or 158768 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 12700880 is about 3563.8294010797. The cubic root of 12700880 is about 233.3160440704.

The spelling of 12700880 in words is "twelve million, seven hundred thousand, eight hundred eighty".