1297088880 has 40 divisors (see below), whose sum is σ = 4020976272. Its totient is φ = 345890304.

The previous prime is 1297088879. The next prime is 1297088927. The reversal of 1297088880 is 888807921.

It is a happy number.

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

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, 2702029 + ... + 2702508.

Almost surely, 2^1297088880 is an apocalyptic number.

1297088880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1297088880 is an abundant number, since it is smaller than the sum of its proper divisors (2723887392).

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

1297088880 is a wasteful number, since it uses less digits than its factorization.

1297088880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5404553 (or 5404547 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 51.

The square root of 1297088880 is about 36015.1201580669. The cubic root of 1297088880 is about 1090.5776137845.

The spelling of 1297088880 in words is "one billion, two hundred ninety-seven million, eighty-eight thousand, eight hundred eighty".