978570840 has 192 divisors, whose sum is σ = 3227329440. Its totient is φ = 237219840.

The previous prime is 978570839. The next prime is 978570863. The reversal of 978570840 is 48075879.

It is a self number, because there is not a number n which added to its sum of digits gives 978570840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1480110 + ... + 1480770.

Almost surely, 2^978570840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 978570840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1613664720).

978570840 is an abundant number, since it is smaller than the sum of its proper divisors (2248758600).

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

978570840 is a wasteful number, since it uses less digits than its factorization.

978570840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774 (or 757 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 978570840 is about 31282.1169360387. The cubic root of 978570840 is about 992.8053072033.

The spelling of 978570840 in words is "nine hundred seventy-eight million, five hundred seventy thousand, eight hundred forty".