28199103 has 8 divisors (see below), whose sum is σ = 38516016. Its totient is φ = 18340800.

The previous prime is 28199089. The next prime is 28199113. The reversal of 28199103 is 30199182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28199103 - 2²⁰ = 27150527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28199113) 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, 114508 + ... + 114753.

It is an arithmetic number, because the mean of its divisors is an integer number (4814502).

Almost surely, 2^28199103 is an apocalyptic number.

28199103 is a deficient number, since it is larger than the sum of its proper divisors (10316913).

28199103 is a wasteful number, since it uses less digits than its factorization.

28199103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229305.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 28199103 is about 5310.2827608330. The cubic root of 28199103 is about 304.3769526106.

The spelling of 28199103 in words is "twenty-eight million, one hundred ninety-nine thousand, one hundred three".