978360780 has 72 divisors (see below), whose sum is σ = 2766031632. Its totient is φ = 258384896.

The previous prime is 978360769. The next prime is 978360827. The reversal of 978360780 is 87063879.

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, 765502 + ... + 766778.

It is an arithmetic number, because the mean of its divisors is an integer number (38417106).

Almost surely, 2^978360780 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 978360780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1383015816).

978360780 is an abundant number, since it is smaller than the sum of its proper divisors (1787670852).

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

978360780 is a wasteful number, since it uses less digits than its factorization.

978360780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515 (or 1400 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 978360780 is about 31278.7592464919. The cubic root of 978360780 is about 992.7342635962.

The spelling of 978360780 in words is "nine hundred seventy-eight million, three hundred sixty thousand, seven hundred eighty".