28799235 has 12 divisors (see below), whose sum is σ = 49918752. Its totient is φ = 15359568.

The previous prime is 28799219. The next prime is 28799237. The reversal of 28799235 is 53299782.

It is not a de Polignac number, because 28799235 - 2⁴ = 28799219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 639983 = 28799235 / (2 + 8 + 7 + 9 + 9 + 2 + 3 + 5).

It is not an unprimeable number, because it can be changed into a prime (28799237) 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 11 ways as a sum of consecutive naturals, for example, 319947 + ... + 320036.

It is an arithmetic number, because the mean of its divisors is an integer number (4159896).

Almost surely, 2^28799235 is an apocalyptic number.

28799235 is a deficient number, since it is larger than the sum of its proper divisors (21119517).

28799235 is a wasteful number, since it uses less digits than its factorization.

28799235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639994 (or 639991 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 28799235 is about 5366.4918708594. The cubic root of 28799235 is about 306.5210589208.

The spelling of 28799235 in words is "twenty-eight million, seven hundred ninety-nine thousand, two hundred thirty-five".