1294996656 has 20 divisors (see below), whose sum is σ = 3345408152. Its totient is φ = 431665536.

The previous prime is 1294996631. The next prime is 1294996663. The reversal of 1294996656 is 6566994921.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1294996596 and 1294996605.

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, 13489501 + ... + 13489596.

Almost surely, 2^1294996656 is an apocalyptic number.

1294996656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1294996656 is an abundant number, since it is smaller than the sum of its proper divisors (2050411496).

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

1294996656 is a wasteful number, since it uses less digits than its factorization.

1294996656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26979108 (or 26979102 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 57.

The square root of 1294996656 is about 35986.0619684900. The cubic root of 1294996656 is about 1089.9909254919.

The spelling of 1294996656 in words is "one billion, two hundred ninety-four million, nine hundred ninety-six thousand, six hundred fifty-six".