9978338800 has 30 divisors (see below), whose sum is σ = 23972959928. Its totient is φ = 3991335360.

The previous prime is 9978338761. The next prime is 9978338827. The reversal of 9978338800 is 88338799.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12472524 + ... + 12473323.

Almost surely, 2^9978338800 is an apocalyptic number.

It is an amenable number.

9978338800 is an abundant number, since it is smaller than the sum of its proper divisors (13994621128).

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

9978338800 is a wasteful number, since it uses less digits than its factorization.

9978338800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24945865 (or 24945854 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 55.

The square root of 9978338800 is about 99891.6352854432. The cubic root of 9978338800 is about 2152.8779774579.

The spelling of 9978338800 in words is "nine billion, nine hundred seventy-eight million, three hundred thirty-eight thousand, eight hundred".