28199003 has 4 divisors (see below), whose sum is σ = 32227440. Its totient is φ = 24170568.

The previous prime is 28198993. The next prime is 28199009. The reversal of 28199003 is 30099182.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28199003 - 2⁴ = 28198987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28199009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2014208 + ... + 2014221.

It is an arithmetic number, because the mean of its divisors is an integer number (8056860).

Almost surely, 2^28199003 is an apocalyptic number.

28199003 is a deficient number, since it is larger than the sum of its proper divisors (4028437).

28199003 is an equidigital number, since it uses as much as digits as its factorization.

28199003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4028436.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 28199003 is about 5310.2733451302. The cubic root of 28199003 is about 304.3765928151.

The spelling of 28199003 in words is "twenty-eight million, one hundred ninety-nine thousand, three".