198227520 has 112 divisors (see below), whose sum is σ = 699333120. Its totient is φ = 52858368.

The previous prime is 198227479. The next prime is 198227539. The reversal of 198227520 is 25722891.

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

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, 2832 + ... + 20111.

Almost surely, 2^198227520 is an apocalyptic number.

198227520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198227520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349666560).

198227520 is an abundant number, since it is smaller than the sum of its proper divisors (501105600).

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

198227520 is a wasteful number, since it uses less digits than its factorization.

198227520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22969 (or 22953 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 198227520 is about 14079.3295294911. The cubic root of 198227520 is about 583.0708311878.

The spelling of 198227520 in words is "one hundred ninety-eight million, two hundred twenty-seven thousand, five hundred twenty".