978216200 has 48 divisors (see below), whose sum is σ = 2449309380. Its totient is φ = 361186560.

The previous prime is 978216199. The next prime is 978216229. The reversal of 978216200 is 2612879.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 457189924 + 521026276 = 21382^2 + 22826^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185519 + ... + 190718.

Almost surely, 2^978216200 is an apocalyptic number.

It is an amenable number.

978216200 is an abundant number, since it is smaller than the sum of its proper divisors (1471093180).

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

978216200 is a wasteful number, since it uses less digits than its factorization.

978216200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376266 (or 376257 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 978216200 is about 31276.4480080459. The cubic root of 978216200 is about 992.6853598265.

The spelling of 978216200 in words is "nine hundred seventy-eight million, two hundred sixteen thousand, two hundred".