198490572 has 108 divisors (see below), whose sum is σ = 618082920. Its totient is φ = 53367552.

The previous prime is 198490519. The next prime is 198490583. The reversal of 198490572 is 275094891.

198490572 is a `hidden beast` number, since 1 + 98 + 490 + 5 + 72 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 26679 + ... + 33297.

It is an arithmetic number, because the mean of its divisors is an integer number (5722990).

Almost surely, 2^198490572 is an apocalyptic number.

198490572 is a gapful number since it is divisible by the number (12) 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 198490572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309041460).

198490572 is an abundant number, since it is smaller than the sum of its proper divisors (419592348).

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

198490572 is a wasteful number, since it uses less digits than its factorization.

198490572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6660 (or 6648 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 198490572 is about 14088.6682124323. The cubic root of 198490572 is about 583.3286328510.

The spelling of 198490572 in words is "one hundred ninety-eight million, four hundred ninety thousand, five hundred seventy-two".