978812436 has 72 divisors (see below), whose sum is σ = 2796638880. Its totient is φ = 264938688.

The previous prime is 978812413. The next prime is 978812453. The reversal of 978812436 is 634218879.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32635 + ... + 54978.

Almost surely, 2^978812436 is an apocalyptic number.

It is an amenable number.

978812436 is an abundant number, since it is smaller than the sum of its proper divisors (1817826444).

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

978812436 is a wasteful number, since it uses less digits than its factorization.

978812436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87653 (or 87644 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 978812436 is about 31285.9782650311. The cubic root of 978812436 is about 992.8870039133.

The spelling of 978812436 in words is "nine hundred seventy-eight million, eight hundred twelve thousand, four hundred thirty-six".