978556732 has 12 divisors (see below), whose sum is σ = 1748910240. Its totient is φ = 478868096.

The previous prime is 978556729. The next prime is 978556759. The reversal of 978556732 is 237655879.

It is a self number, because there is not a number n which added to its sum of digits gives 978556732.

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 3 ways as a sum of consecutive naturals, for example, 2602357 + ... + 2602732.

It is an arithmetic number, because the mean of its divisors is an integer number (145742520).

Almost surely, 2^978556732 is an apocalyptic number.

It is an amenable number.

978556732 is a deficient number, since it is larger than the sum of its proper divisors (770353508).

978556732 is a wasteful number, since it uses less digits than its factorization.

978556732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5205140 (or 5205138 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 52.

The square root of 978556732 is about 31281.8914389779. The cubic root of 978556732 is about 992.8005361079.

The spelling of 978556732 in words is "nine hundred seventy-eight million, five hundred fifty-six thousand, seven hundred thirty-two".