978422208 has 112 divisors (see below), whose sum is σ = 2721254400. Its totient is φ = 309658624.

The previous prime is 978422197. The next prime is 978422209. The reversal of 978422208 is 802224879.

It is a self number, because there is not a number n which added to its sum of digits gives 978422208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978422209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 657241 + ... + 658727.

Almost surely, 2^978422208 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 978422208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1360627200).

978422208 is an abundant number, since it is smaller than the sum of its proper divisors (1742832192).

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

978422208 is a wasteful number, since it uses less digits than its factorization.

978422208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674 (or 1664 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 978422208 is about 31279.7411753998. The cubic root of 978422208 is about 992.7550399823.

The spelling of 978422208 in words is "nine hundred seventy-eight million, four hundred twenty-two thousand, two hundred eight".