978931332 has 72 divisors (see below), whose sum is σ = 2717166816. Its totient is φ = 307110528.

The previous prime is 978931321. The next prime is 978931379. The reversal of 978931332 is 233139879.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13098 + ... + 46145.

It is an arithmetic number, because the mean of its divisors is an integer number (37738428).

Almost surely, 2^978931332 is an apocalyptic number.

It is an amenable number.

978931332 is an abundant number, since it is smaller than the sum of its proper divisors (1738235484).

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

978931332 is a wasteful number, since it uses less digits than its factorization.

978931332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59279 (or 59265 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 978931332 is about 31287.8783556827. The cubic root of 978931332 is about 992.9272041633.

It can be divided in two parts, 97893 and 1332, that added together give a square (99225 = 315²).

The spelling of 978931332 in words is "nine hundred seventy-eight million, nine hundred thirty-one thousand, three hundred thirty-two".