198815672 has 32 divisors (see below), whose sum is σ = 410713200. Its totient is φ = 89472000.

The previous prime is 198815621. The next prime is 198815693. The reversal of 198815672 is 276518891.

It is a super-3 number, since 3×198815672³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2297 + ... + 20072.

Almost surely, 2^198815672 is an apocalyptic number.

It is an amenable number.

198815672 is an abundant number, since it is smaller than the sum of its proper divisors (211897528).

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

198815672 is a wasteful number, since it uses less digits than its factorization.

198815672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22487 (or 22483 counting only the distinct ones).

The product of its digits is 241920, while the sum is 47.

The square root of 198815672 is about 14100.2011333172. The cubic root of 198815672 is about 583.6469295775.

The spelling of 198815672 in words is "one hundred ninety-eight million, eight hundred fifteen thousand, six hundred seventy-two".