9978571200 has 252 divisors, whose sum is σ = 35452936968. Its totient is φ = 2456064000.

The previous prime is 9978571189. The next prime is 9978571231. The reversal of 9978571200 is 21758799.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 9978571200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 805050 + ... + 817350.

Almost surely, 2^9978571200 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 9978571200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17726468484).

9978571200 is an abundant number, since it is smaller than the sum of its proper divisors (25474365768).

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

9978571200 is a wasteful number, since it uses less digits than its factorization.

9978571200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12352 (or 12324 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 48.

The square root of 9978571200 is about 99892.7985392340. The cubic root of 9978571200 is about 2152.8946911604.

The spelling of 9978571200 in words is "nine billion, nine hundred seventy-eight million, five hundred seventy-one thousand, two hundred".