1280488680 has 96 divisors (see below), whose sum is σ = 4250188800. Its totient is φ = 334194048.

The previous prime is 1280488667. The next prime is 1280488691. The reversal of 1280488680 is 868840821.

It is a happy number.

1280488680 is a `hidden beast` number, since 12 + 80 + 488 + 6 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20920 + ... + 54759.

It is an arithmetic number, because the mean of its divisors is an integer number (44272800).

Almost surely, 2^1280488680 is an apocalyptic number.

1280488680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1280488680 is an abundant number, since it is smaller than the sum of its proper divisors (2969700120).

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

1280488680 is a wasteful number, since it uses less digits than its factorization.

1280488680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75743 (or 75736 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 45.

The square root of 1280488680 is about 35783.9164988965. The cubic root of 1280488680 is about 1085.9052042242.

The spelling of 1280488680 in words is "one billion, two hundred eighty million, four hundred eighty-eight thousand, six hundred eighty".