198838772 has 48 divisors (see below), whose sum is σ = 402724224. Its totient is φ = 85008000.

The previous prime is 198838771. The next prime is 198838789. The reversal of 198838772 is 277838891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198838771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60122 + ... + 63342.

It is an arithmetic number, because the mean of its divisors is an integer number (8390088).

Almost surely, 2^198838772 is an apocalyptic number.

It is an amenable number.

198838772 is an abundant number, since it is smaller than the sum of its proper divisors (203885452).

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

198838772 is a wasteful number, since it uses less digits than its factorization.

198838772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320 (or 3318 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 53.

The square root of 198838772 is about 14101.0202467765. The cubic root of 198838772 is about 583.6695329632.

The spelling of 198838772 in words is "one hundred ninety-eight million, eight hundred thirty-eight thousand, seven hundred seventy-two".