978642072 has 48 divisors (see below), whose sum is σ = 2659976280. Its totient is φ = 325046400.

The previous prime is 978642053. The next prime is 978642097. The reversal of 978642072 is 270246879.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3954 + ... + 44417.

Almost surely, 2^978642072 is an apocalyptic number.

It is an amenable number.

978642072 is an abundant number, since it is smaller than the sum of its proper divisors (1681334208).

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

978642072 is a wasteful number, since it uses less digits than its factorization.

978642072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48664 (or 48657 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 978642072 is about 31283.2554571931. The cubic root of 978642072 is about 992.8293960033.

The spelling of 978642072 in words is "nine hundred seventy-eight million, six hundred forty-two thousand, seventy-two".