198878850 has 36 divisors (see below), whose sum is σ = 534322386. Its totient is φ = 53034240.

The previous prime is 198878753. The next prime is 198878851. The reversal of 198878850 is 58878891.

198878850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 153437769 + 45441081 = 12387^2 + 6741^2 .

It is not an unprimeable number, because it can be changed into a prime (198878851) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 220527 + ... + 221426.

Almost surely, 2^198878850 is an apocalyptic number.

198878850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198878850 is an abundant number, since it is smaller than the sum of its proper divisors (335443536).

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

198878850 is a wasteful number, since it uses less digits than its factorization.

198878850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441971 (or 441963 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 54.

The square root of 198878850 is about 14102.4412780199. The cubic root of 198878850 is about 583.7087451950.

The spelling of 198878850 in words is "one hundred ninety-eight million, eight hundred seventy-eight thousand, eight hundred fifty".