28100199 has 16 divisors (see below), whose sum is σ = 38977664. Its totient is φ = 17992800.

The previous prime is 28100161. The next prime is 28100209. The reversal of 28100199 is 99100182.

It is not a de Polignac number, because 28100199 - 2¹⁶ = 28034663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28100399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6084 + ... + 9654.

It is an arithmetic number, because the mean of its divisors is an integer number (2436104).

Almost surely, 2^28100199 is an apocalyptic number.

28100199 is a deficient number, since it is larger than the sum of its proper divisors (10877465).

28100199 is a wasteful number, since it uses less digits than its factorization.

28100199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3678.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 28100199 is about 5300.9620824903. The cubic root of 28100199 is about 304.0206840439.

The spelling of 28100199 in words is "twenty-eight million, one hundred thousand, one hundred ninety-nine".