1296452916 has 144 divisors (see below), whose sum is σ = 3865767360. Its totient is φ = 362050560.

The previous prime is 1296452909. The next prime is 1296452921. The reversal of 1296452916 is 6192546921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 276060 + ... + 280716.

Almost surely, 2^1296452916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1296452916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1932883680).

1296452916 is an abundant number, since it is smaller than the sum of its proper divisors (2569314444).

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

1296452916 is a wasteful number, since it uses less digits than its factorization.

1296452916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4734 (or 4729 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 1296452916 is about 36006.2899505073. The cubic root of 1296452916 is about 1090.3993475414.

The spelling of 1296452916 in words is "one billion, two hundred ninety-six million, four hundred fifty-two thousand, nine hundred sixteen".