1295679880 has 32 divisors (see below), whose sum is σ = 3180306240. Its totient is φ = 471156160.

The previous prime is 1295679877. The next prime is 1295679881. The reversal of 1295679880 is 889765921.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is not an unprimeable number, because it can be changed into a prime (1295679881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1471924 + ... + 1472803.

It is an arithmetic number, because the mean of its divisors is an integer number (99384570).

Almost surely, 2^1295679880 is an apocalyptic number.

1295679880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1295679880 is an abundant number, since it is smaller than the sum of its proper divisors (1884626360).

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

1295679880 is a wasteful number, since it uses less digits than its factorization.

1295679880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2944749 (or 2944745 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 55.

The square root of 1295679880 is about 35995.5536143008. The cubic root of 1295679880 is about 1090.1825803065.

The spelling of 1295679880 in words is "one billion, two hundred ninety-five million, six hundred seventy-nine thousand, eight hundred eighty".