198972792 has 24 divisors (see below), whose sum is σ = 538884840. Its totient is φ = 66324240.

The previous prime is 198972749. The next prime is 198972817. The reversal of 198972792 is 297279891.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1381684 + ... + 1381827.

It is an arithmetic number, because the mean of its divisors is an integer number (22453535).

Almost surely, 2^198972792 is an apocalyptic number.

198972792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

198972792 is an abundant number, since it is smaller than the sum of its proper divisors (339912048).

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

198972792 is a wasteful number, since it uses less digits than its factorization.

198972792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763523 (or 2763516 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 54.

The square root of 198972792 is about 14105.7715847096. The cubic root of 198972792 is about 583.8006372109.

The spelling of 198972792 in words is "one hundred ninety-eight million, nine hundred seventy-two thousand, seven hundred ninety-two".