9981200 has 30 divisors (see below), whose sum is σ = 23980794. Its totient is φ = 3992320.

The previous prime is 9981199. The next prime is 9981211. The reversal of 9981200 is 21899.

It can be written as a sum of positive squares in 3 ways, for example, as 1290496 + 8690704 = 1136^2 + 2948^2 .

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, 12077 + ... + 12876.

Almost surely, 2^9981200 is an apocalyptic number.

It is an amenable number.

9981200 is an abundant number, since it is smaller than the sum of its proper divisors (13999594).

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

9981200 is a wasteful number, since it uses less digits than its factorization.

9981200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24971 (or 24960 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 9981200 is about 3159.3037207587. The cubic root of 9981200 is about 215.3083730671.

The spelling of 9981200 in words is "nine million, nine hundred eighty-one thousand, two hundred".