28333899 has 48 divisors (see below), whose sum is σ = 47174400. Its totient is φ = 16228800.

The previous prime is 28333891. The next prime is 28333901. The reversal of 28333899 is 99833382.

It is not a de Polignac number, because 28333899 - 2³ = 28333891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28333891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 203772 + ... + 203910.

It is an arithmetic number, because the mean of its divisors is an integer number (982800).

Almost surely, 2^28333899 is an apocalyptic number.

28333899 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

28333899 is a deficient number, since it is larger than the sum of its proper divisors (18840501).

28333899 is a wasteful number, since it uses less digits than its factorization.

28333899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 253 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 28333899 is about 5322.9596090897. The cubic root of 28333899 is about 304.8611712532.

The spelling of 28333899 in words is "twenty-eight million, three hundred thirty-three thousand, eight hundred ninety-nine".