198978576 has 40 divisors (see below), whose sum is σ = 526570464. Its totient is φ = 64707840.

The previous prime is 198978569. The next prime is 198978601. The reversal of 198978576 is 675879891.

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, 48586 + ... + 52521.

Almost surely, 2^198978576 is an apocalyptic number.

198978576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

198978576 is an abundant number, since it is smaller than the sum of its proper divisors (327591888).

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

198978576 is a wasteful number, since it uses less digits than its factorization.

198978576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101159 (or 101153 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 60.

The square root of 198978576 is about 14105.9766056803. The cubic root of 198978576 is about 583.8062940482.

The spelling of 198978576 in words is "one hundred ninety-eight million, nine hundred seventy-eight thousand, five hundred seventy-six".