978206976 has 144 divisors (see below), whose sum is σ = 2924555200. Its totient is φ = 322486272.

The previous prime is 978206939. The next prime is 978207007. The reversal of 978206976 is 679602879.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 669735 + ... + 671193.

Almost surely, 2^978206976 is an apocalyptic number.

978206976 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 978206976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1462277600).

978206976 is an abundant number, since it is smaller than the sum of its proper divisors (1946348224).

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

978206976 is a wasteful number, since it uses less digits than its factorization.

978206976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581 (or 1561 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 978206976 is about 31276.3005484984. The cubic root of 978206976 is about 992.6822396715.

The spelling of 978206976 in words is "nine hundred seventy-eight million, two hundred six thousand, nine hundred seventy-six".