978863424 has 224 divisors, whose sum is σ = 3276819456. Its totient is φ = 250490880.

The previous prime is 978863423. The next prime is 978863429. The reversal of 978863424 is 424368879.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978863423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1078779 + ... + 1079685.

Almost surely, 2^978863424 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 978863424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1638409728).

978863424 is an abundant number, since it is smaller than the sum of its proper divisors (2297956032).

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

978863424 is a wasteful number, since it uses less digits than its factorization.

978863424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013 (or 1003 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The square root of 978863424 is about 31286.7931242561. The cubic root of 978863424 is about 992.9042440034.

The spelling of 978863424 in words is "nine hundred seventy-eight million, eight hundred sixty-three thousand, four hundred twenty-four".