28824399 has 12 divisors (see below), whose sum is σ = 41786056. Its totient is φ = 19146672.

The previous prime is 28824371. The next prime is 28824403. The reversal of 28824399 is 99342882.

It is not a de Polignac number, because 28824399 - 2⁸ = 28824143 is a prime.

It is a super-2 number, since 2×28824399² = 1661691955422402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28824329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3112 + ... + 8205.

Almost surely, 2^28824399 is an apocalyptic number.

28824399 is a deficient number, since it is larger than the sum of its proper divisors (12961657).

28824399 is a wasteful number, since it uses less digits than its factorization.

28824399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11606 (or 11603 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 28824399 is about 5368.8359073453. The cubic root of 28824399 is about 306.6103095607.

The spelling of 28824399 in words is "twenty-eight million, eight hundred twenty-four thousand, three hundred ninety-nine".