8978433816 has 32 divisors (see below), whose sum is σ = 24486638400. Its totient is φ = 2720737440.

The previous prime is 8978433799. The next prime is 8978433851. The reversal of 8978433816 is 6183348798.

It is a super-2 number, since 2×8978433816² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17004346 + ... + 17004873.

It is an arithmetic number, because the mean of its divisors is an integer number (765207450).

Almost surely, 2^8978433816 is an apocalyptic number.

It is an amenable number.

8978433816 is an abundant number, since it is smaller than the sum of its proper divisors (15508204584).

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

8978433816 is a wasteful number, since it uses less digits than its factorization.

8978433816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34009239 (or 34009235 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 57.

The square root of 8978433816 is about 94754.5978620563. The cubic root of 8978433816 is about 2078.4210323248.

The spelling of 8978433816 in words is "eight billion, nine hundred seventy-eight million, four hundred thirty-three thousand, eight hundred sixteen".