978513996 has 12 divisors (see below), whose sum is σ = 2283199352. Its totient is φ = 326171328.

The previous prime is 978513979. The next prime is 978514013. The reversal of 978513996 is 699315879.

It is an interprime number because it is at equal distance from previous prime (978513979) and next prime (978514013).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40771405 + ... + 40771428.

Almost surely, 2^978513996 is an apocalyptic number.

It is an amenable number.

978513996 is an abundant number, since it is smaller than the sum of its proper divisors (1304685356).

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

978513996 is a wasteful number, since it uses less digits than its factorization.

978513996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81542840 (or 81542838 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 57.

The square root of 978513996 is about 31281.2083526196. The cubic root of 978513996 is about 992.7860832101.

The spelling of 978513996 in words is "nine hundred seventy-eight million, five hundred thirteen thousand, nine hundred ninety-six".