199020028 has 6 divisors (see below), whose sum is σ = 348285056. Its totient is φ = 99510012.

The previous prime is 199020023. The next prime is 199020067. The reversal of 199020028 is 820020991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199020023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24877500 + ... + 24877507.

Almost surely, 2^199020028 is an apocalyptic number.

It is an amenable number.

199020028 is a deficient number, since it is larger than the sum of its proper divisors (149265028).

199020028 is a wasteful number, since it uses less digits than its factorization.

199020028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49755011 (or 49755009 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 199020028 is about 14107.4458354445. The cubic root of 199020028 is about 583.8468315083.

The spelling of 199020028 in words is "one hundred ninety-nine million, twenty thousand, twenty-eight".