978536812 has 12 divisors (see below), whose sum is σ = 1868115816. Its totient is φ = 444789440.

The previous prime is 978536777. The next prime is 978536831. The reversal of 978536812 is 218635879.

978536812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×978536812³ (a number of 28 digits) contains 333 as substring.

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, 11119693 + ... + 11119780.

It is an arithmetic number, because the mean of its divisors is an integer number (155676318).

Almost surely, 2^978536812 is an apocalyptic number.

It is an amenable number.

978536812 is a deficient number, since it is larger than the sum of its proper divisors (889579004).

978536812 is a wasteful number, since it uses less digits than its factorization.

978536812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22239488 (or 22239486 counting only the distinct ones).

The product of its digits is 725760, while the sum is 49.

The square root of 978536812 is about 31281.5730422880. The cubic root of 978536812 is about 992.7937994108.

The spelling of 978536812 in words is "nine hundred seventy-eight million, five hundred thirty-six thousand, eight hundred twelve".