199564828 has 24 divisors (see below), whose sum is σ = 377560400. Its totient is φ = 91974528.

The previous prime is 199564817. The next prime is 199564889. The reversal of 199564828 is 828465991.

It is a super-2 number, since 2×199564828² = 79652241149339168, which contains 22 as substring.

It is a congruent number.

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, 32673 + ... + 38296.

Almost surely, 2^199564828 is an apocalyptic number.

It is an amenable number.

199564828 is a deficient number, since it is larger than the sum of its proper divisors (177995572).

199564828 is a wasteful number, since it uses less digits than its factorization.

199564828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71029 (or 71027 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 52.

The square root of 199564828 is about 14126.7415917472. The cubic root of 199564828 is about 584.3790894239.

The spelling of 199564828 in words is "one hundred ninety-nine million, five hundred sixty-four thousand, eight hundred twenty-eight".