198429972 has 24 divisors (see below), whose sum is σ = 498619296. Its totient is φ = 61055328.

The previous prime is 198429943. The next prime is 198429983. The reversal of 198429972 is 279924891.

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, 635838 + ... + 636149.

It is an arithmetic number, because the mean of its divisors is an integer number (20775804).

Almost surely, 2^198429972 is an apocalyptic number.

198429972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

198429972 is an abundant number, since it is smaller than the sum of its proper divisors (300189324).

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

198429972 is a wasteful number, since it uses less digits than its factorization.

198429972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272007 (or 1272005 counting only the distinct ones).

The product of its digits is 653184, while the sum is 51.

The square root of 198429972 is about 14086.5173836545. The cubic root of 198429972 is about 583.2692625866.

The spelling of 198429972 in words is "one hundred ninety-eight million, four hundred twenty-nine thousand, nine hundred seventy-two".