198557376 has 56 divisors (see below), whose sum is σ = 527669760. Its totient is φ = 65893632.

The previous prime is 198557371. The next prime is 198557377. The reversal of 198557376 is 673755891.

It is not an unprimeable number, because it can be changed into a prime (198557371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43725 + ... + 48051.

Almost surely, 2^198557376 is an apocalyptic number.

198557376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198557376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263834880).

198557376 is an abundant number, since it is smaller than the sum of its proper divisors (329112384).

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

198557376 is a wasteful number, since it uses less digits than its factorization.

198557376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4581 (or 4571 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 51.

The square root of 198557376 is about 14091.0388545345. The cubic root of 198557376 is about 583.3940672184.

The spelling of 198557376 in words is "one hundred ninety-eight million, five hundred fifty-seven thousand, three hundred seventy-six".