198057720 has 64 divisors (see below), whose sum is σ = 679057920. Its totient is φ = 45270144.

The previous prime is 198057709. The next prime is 198057731. The reversal of 198057720 is 27750891.

It is an interprime number because it is at equal distance from previous prime (198057709) and next prime (198057731).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117052 + ... + 118731.

It is an arithmetic number, because the mean of its divisors is an integer number (10610280).

Almost surely, 2^198057720 is an apocalyptic number.

198057720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198057720 is an abundant number, since it is smaller than the sum of its proper divisors (481000200).

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

198057720 is a wasteful number, since it uses less digits than its factorization.

198057720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235804 (or 235800 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 198057720 is about 14073.2981209097. The cubic root of 198057720 is about 582.9042991314.

The spelling of 198057720 in words is "one hundred ninety-eight million, fifty-seven thousand, seven hundred twenty".