28890253 has 12 divisors (see below), whose sum is σ = 33694752. Its totient is φ = 24698520.

The previous prime is 28890187. The next prime is 28890263. The reversal of 28890253 is 35209882.

It is not a de Polignac number, because 28890253 - 2²¹ = 26793101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28890263) 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, 35218 + ... + 36028.

It is an arithmetic number, because the mean of its divisors is an integer number (2807896).

Almost surely, 2^28890253 is an apocalyptic number.

It is an amenable number.

28890253 is a deficient number, since it is larger than the sum of its proper divisors (4804499).

28890253 is an equidigital number, since it uses as much as digits as its factorization.

28890253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552 (or 1545 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 28890253 is about 5374.9653952374. The cubic root of 28890253 is about 306.8436322386.

The spelling of 28890253 in words is "twenty-eight million, eight hundred ninety thousand, two hundred fifty-three".