978312896 has 56 divisors (see below), whose sum is σ = 2162958336. Its totient is φ = 435211520.

The previous prime is 978312871. The next prime is 978312899. The reversal of 978312896 is 698213879.

It is a super-2 number, since 2×978312896² = 1914192244959813632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (978312899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18305 + ... + 47871.

It is an arithmetic number, because the mean of its divisors is an integer number (38624256).

Almost surely, 2^978312896 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 978312896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1081479168).

978312896 is an abundant number, since it is smaller than the sum of its proper divisors (1184645440).

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

978312896 is a wasteful number, since it uses less digits than its factorization.

978312896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29637 (or 29627 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 53.

The square root of 978312896 is about 31277.9937975568. The cubic root of 978312896 is about 992.7180675044.

The spelling of 978312896 in words is "nine hundred seventy-eight million, three hundred twelve thousand, eight hundred ninety-six".