198502056 has 64 divisors (see below), whose sum is σ = 563155200. Its totient is φ = 64756224.

The previous prime is 198502043. The next prime is 198502069. The reversal of 198502056 is 650205891.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (198502043) and next prime (198502069).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 198502056.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376 + ... + 19928.

It is an arithmetic number, because the mean of its divisors is an integer number (8799300).

Almost surely, 2^198502056 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 198502056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281577600).

198502056 is an abundant number, since it is smaller than the sum of its proper divisors (364653144).

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

198502056 is a wasteful number, since it uses less digits than its factorization.

198502056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19615 (or 19605 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 198502056 is about 14089.0757681262. The cubic root of 198502056 is about 583.3398824480.

The spelling of 198502056 in words is "one hundred ninety-eight million, five hundred two thousand, fifty-six".