28679199 has 4 divisors (see below), whose sum is σ = 38238936. Its totient is φ = 19119464.

The previous prime is 28679197. The next prime is 28679207. The reversal of 28679199 is 99197682.

It is a happy number.

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 28679199 - 2¹ = 28679197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28679197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4779864 + ... + 4779869.

It is an arithmetic number, because the mean of its divisors is an integer number (9559734).

Almost surely, 2^28679199 is an apocalyptic number.

28679199 is a deficient number, since it is larger than the sum of its proper divisors (9559737).

28679199 is an equidigital number, since it uses as much as digits as its factorization.

28679199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9559736.

The product of its digits is 489888, while the sum is 51.

The square root of 28679199 is about 5355.2963503433. The cubic root of 28679199 is about 306.0946031558.

The spelling of 28679199 in words is "twenty-eight million, six hundred seventy-nine thousand, one hundred ninety-nine".