1296910720 has 64 divisors (see below), whose sum is σ = 3543357600. Its totient is φ = 444653568.

The previous prime is 1296910673. The next prime is 1296910723. The reversal of 1296910720 is 270196921.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 1296910720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296910723) 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, 140265 + ... + 149224.

Almost surely, 2^1296910720 is an apocalyptic number.

1296910720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1296910720 is an abundant number, since it is smaller than the sum of its proper divisors (2246446880).

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

1296910720 is an equidigital number, since it uses as much as digits as its factorization.

1296910720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289515 (or 289503 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1296910720 is about 36012.6466675250. The cubic root of 1296910720 is about 1090.5276798627.

The spelling of 1296910720 in words is "one billion, two hundred ninety-six million, nine hundred ten thousand, seven hundred twenty".