978683380 has 12 divisors (see below), whose sum is σ = 2055235140. Its totient is φ = 391473344.

The previous prime is 978683309. The next prime is 978683389. The reversal of 978683380 is 83386879.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 438399844 + 540283536 = 20938^2 + 23244^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978683389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24467065 + ... + 24467104.

It is an arithmetic number, because the mean of its divisors is an integer number (171269595).

Almost surely, 2^978683380 is an apocalyptic number.

It is an amenable number.

978683380 is an abundant number, since it is smaller than the sum of its proper divisors (1076551760).

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

978683380 is a wasteful number, since it uses less digits than its factorization.

978683380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48934178 (or 48934176 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 978683380 is about 31283.9156756311. The cubic root of 978683380 is about 992.8433647534.

The spelling of 978683380 in words is "nine hundred seventy-eight million, six hundred eighty-three thousand, three hundred eighty".