28426199 has 6 divisors (see below), whose sum is σ = 28837320. Its totient is φ = 28020860.

The previous prime is 28426187. The next prime is 28426213. The reversal of 28426199 is 99162482.

It is not a de Polignac number, because 28426199 - 2¹² = 28422103 is a prime.

It is a Duffinian number.

28426199 is a modest number, since divided by 26199 gives 284 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28426129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2222 + ... + 7860.

It is an arithmetic number, because the mean of its divisors is an integer number (4806220).

Almost surely, 2^28426199 is an apocalyptic number.

28426199 is a deficient number, since it is larger than the sum of its proper divisors (411121).

28426199 is an frugal number, since it uses more digits than its factorization.

28426199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5781 (or 5710 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 28426199 is about 5331.6225485306. The cubic root of 28426199 is about 305.1918491995.

The spelling of 28426199 in words is "twenty-eight million, four hundred twenty-six thousand, one hundred ninety-nine".