978911232 has 136 divisors (see below), whose sum is σ = 2818550784. Its totient is φ = 300417024.

The previous prime is 978911209. The next prime is 978911237. The reversal of 978911232 is 232119879.

It is not an unprimeable number, because it can be changed into a prime (978911237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2555713 + ... + 2556095.

Almost surely, 2^978911232 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 978911232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1409275392).

978911232 is an abundant number, since it is smaller than the sum of its proper divisors (1839639552).

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

978911232 is an equidigital number, since it uses as much as digits as its factorization.

978911232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 401 counting only the distinct ones).

The product of its digits is 54432, while the sum is 42.

The square root of 978911232 is about 31287.5571433757. The cubic root of 978911232 is about 992.9204083262.

The spelling of 978911232 in words is "nine hundred seventy-eight million, nine hundred eleven thousand, two hundred thirty-two".