1312880 has 20 divisors (see below), whose sum is σ = 3052632. Its totient is φ = 525120.

The previous prime is 1312877. The next prime is 1312889. The reversal of 1312880 is 882131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8126 + ... + 8285.

2^1312880 is an apocalyptic number.

1312880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312880 is an abundant number, since it is smaller than the sum of its proper divisors (1739752).

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

1312880 is a wasteful number, since it uses less digits than its factorization.

1312880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16424 (or 16418 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 1312880 is about 1145.8097573332. The cubic root of 1312880 is about 109.4985439365.

The spelling of 1312880 in words is "one million, three hundred twelve thousand, eight hundred eighty".