198787368 has 32 divisors (see below), whose sum is σ = 535197600. Its totient is φ = 61165248.

The previous prime is 198787357. The next prime is 198787387. The reversal of 198787368 is 863787891.

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, 318258 + ... + 318881.

It is an arithmetic number, because the mean of its divisors is an integer number (16724925).

Almost surely, 2^198787368 is an apocalyptic number.

It is an amenable number.

198787368 is an abundant number, since it is smaller than the sum of its proper divisors (336410232).

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

198787368 is a wasteful number, since it uses less digits than its factorization.

198787368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637161 (or 637157 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 57.

The square root of 198787368 is about 14099.1974239671. The cubic root of 198787368 is about 583.6192316827.

The spelling of 198787368 in words is "one hundred ninety-eight million, seven hundred eighty-seven thousand, three hundred sixty-eight".