198900036 has 30 divisors (see below), whose sum is σ = 519964830. Its totient is φ = 66299904.

The previous prime is 198899977. The next prime is 198900047. The reversal of 198900036 is 630009891.

It can be written as a sum of positive squares in only one way, i.e., 190605636 + 8294400 = 13806^2 + 2880^2 .

It is a super-2 number, since 2×198900036² = 79122448641602592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 306621 + ... + 307268.

It is an arithmetic number, because the mean of its divisors is an integer number (17332161).

Almost surely, 2^198900036 is an apocalyptic number.

It is an amenable number.

198900036 is an abundant number, since it is smaller than the sum of its proper divisors (321064794).

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

198900036 is a wasteful number, since it uses less digits than its factorization.

198900036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613905 (or 613894 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 198900036 is about 14103.1924045586. The cubic root of 198900036 is about 583.7294714049.

The spelling of 198900036 in words is "one hundred ninety-eight million, nine hundred thousand, thirty-six".