28323799 has 8 divisors (see below), whose sum is σ = 33123200. Its totient is φ = 23712696.

The previous prime is 28323797. The next prime is 28323803. The reversal of 28323799 is 99732382.

It is a happy number.

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

It is not a de Polignac number, because 28323799 - 2¹ = 28323797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28323797) 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, 46749 + ... + 47350.

It is an arithmetic number, because the mean of its divisors is an integer number (4140400).

Almost surely, 2^28323799 is an apocalyptic number.

28323799 is a deficient number, since it is larger than the sum of its proper divisors (4799401).

28323799 is an equidigital number, since it uses as much as digits as its factorization.

28323799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94149.

The product of its digits is 163296, while the sum is 43.

The square root of 28323799 is about 5322.0108041980. The cubic root of 28323799 is about 304.8249429911.

The spelling of 28323799 in words is "twenty-eight million, three hundred twenty-three thousand, seven hundred ninety-nine".