1296556032 has 56 divisors (see below), whose sum is σ = 3457337256. Its totient is φ = 432177152.

The previous prime is 1296556007. The next prime is 1296556057. The reversal of 1296556032 is 2306556921.

It is an interprime number because it is at equal distance from previous prime (1296556007) and next prime (1296556057).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1803 + ... + 50954.

Almost surely, 2^1296556032 is an apocalyptic number.

1296556032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1296556032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1728668628).

1296556032 is an abundant number, since it is smaller than the sum of its proper divisors (2160781224).

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

1296556032 is an frugal number, since it uses more digits than its factorization.

1296556032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52786 (or 52762 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 1296556032 is about 36007.7218385168. The cubic root of 1296556032 is about 1090.4282558128.

The spelling of 1296556032 in words is "one billion, two hundred ninety-six million, five hundred fifty-six thousand, thirty-two".