100198220 has 24 divisors (see below), whose sum is σ = 216104784. Its totient is φ = 38995776.

The previous prime is 100198211. The next prime is 100198223. The reversal of 100198220 is 22891001.

It is not an unprimeable number, because it can be changed into a prime (100198223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66962 + ... + 68441.

It is an arithmetic number, because the mean of its divisors is an integer number (9004366).

Almost surely, 2^100198220 is an apocalyptic number.

100198220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100198220 is an abundant number, since it is smaller than the sum of its proper divisors (115906564).

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

100198220 is a wasteful number, since it uses less digits than its factorization.

100198220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135449 (or 135447 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 100198220 is about 10009.9060934656. The cubic root of 100198220 is about 464.4653661932.

The spelling of 100198220 in words is "one hundred million, one hundred ninety-eight thousand, two hundred twenty".