28299999 has 48 divisors (see below), whose sum is σ = 48263040. Its totient is φ = 14616000.

The previous prime is 28299979. The next prime is 28300001. The reversal of 28299999 is 99999282.

It is not a de Polignac number, because 28299999 - 2⁷ = 28299871 is a prime.

28299999 is a modest number, since divided by 9999 gives 2829 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28299979) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 112624 + ... + 112874.

It is an arithmetic number, because the mean of its divisors is an integer number (1005480).

Almost surely, 2^28299999 is an apocalyptic number.

28299999 is a deficient number, since it is larger than the sum of its proper divisors (19963041).

28299999 is a wasteful number, since it uses less digits than its factorization.

28299999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 333 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 57.

The square root of 28299999 is about 5319.7743373192. The cubic root of 28299999 is about 304.7395393507.

The spelling of 28299999 in words is "twenty-eight million, two hundred ninety-nine thousand, nine hundred ninety-nine".