198770808 has 32 divisors (see below), whose sum is σ = 510359760. Its totient is φ = 64465920.

The previous prime is 198770777. The next prime is 198770809. The reversal of 198770808 is 808077891.

It is a super-2 number, since 2×198770808² = 79019668225945728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198770809) 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, 111033 + ... + 112808.

Almost surely, 2^198770808 is an apocalyptic number.

It is an amenable number.

198770808 is an abundant number, since it is smaller than the sum of its proper divisors (311588952).

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

198770808 is a wasteful number, since it uses less digits than its factorization.

198770808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223887 (or 223883 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 48.

The square root of 198770808 is about 14098.6101442660. The cubic root of 198770808 is about 583.6030250814.

The spelling of 198770808 in words is "one hundred ninety-eight million, seven hundred seventy thousand, eight hundred eight".