28423299 has 8 divisors (see below), whose sum is σ = 38055952. Its totient is φ = 18869760.

The previous prime is 28423271. The next prime is 28423313. The reversal of 28423299 is 99232482.

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 28423299 - 2¹² = 28419203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28423399) 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, 18934 + ... + 20379.

It is an arithmetic number, because the mean of its divisors is an integer number (4756994).

Almost surely, 2^28423299 is an apocalyptic number.

28423299 is a deficient number, since it is larger than the sum of its proper divisors (9632653).

28423299 is a wasteful number, since it uses less digits than its factorization.

28423299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39557.

The product of its digits is 62208, while the sum is 39.

The square root of 28423299 is about 5331.3505793560. The cubic root of 28423299 is about 305.1814704351.

The spelling of 28423299 in words is "twenty-eight million, four hundred twenty-three thousand, two hundred ninety-nine".