1296297264 has 40 divisors (see below), whose sum is σ = 3426651712. Its totient is φ = 422049600.

The previous prime is 1296297157. The next prime is 1296297313. The reversal of 1296297264 is 4627926921.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 311962 + ... + 316089.

Almost surely, 2^1296297264 is an apocalyptic number.

It is an amenable number.

1296297264 is an abundant number, since it is smaller than the sum of its proper divisors (2130354448).

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

1296297264 is a wasteful number, since it uses less digits than its factorization.

1296297264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628105 (or 628099 counting only the distinct ones).

The product of its digits is 653184, while the sum is 48.

The square root of 1296297264 is about 36004.1284299454. The cubic root of 1296297264 is about 1090.3557080514.

The spelling of 1296297264 in words is "one billion, two hundred ninety-six million, two hundred ninety-seven thousand, two hundred sixty-four".