198533880 has 48 divisors (see below), whose sum is σ = 645236280. Its totient is φ = 52942272.

The previous prime is 198533801. The next prime is 198533903. The reversal of 198533880 is 88335891.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 275382 + ... + 276101.

Almost surely, 2^198533880 is an apocalyptic number.

198533880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198533880 is an abundant number, since it is smaller than the sum of its proper divisors (446702400).

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

198533880 is a wasteful number, since it uses less digits than its factorization.

198533880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551500 (or 551493 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 198533880 is about 14090.2051085142. The cubic root of 198533880 is about 583.3710546129.

The spelling of 198533880 in words is "one hundred ninety-eight million, five hundred thirty-three thousand, eight hundred eighty".