28236258 has 24 divisors (see below), whose sum is σ = 61354800. Its totient is φ = 9384984.

The previous prime is 28236253. The next prime is 28236287. The reversal of 28236258 is 85263282.

28236258 is a `hidden beast` number, since 2 + 8 + 23 + 625 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (28236253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4753 + ... + 8891.

It is an arithmetic number, because the mean of its divisors is an integer number (2556450).

Almost surely, 2^28236258 is an apocalyptic number.

28236258 is an abundant number, since it is smaller than the sum of its proper divisors (33118542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28236258 is a wasteful number, since it uses less digits than its factorization.

28236258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4526 (or 4523 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 28236258 is about 5313.7800105010. The cubic root of 28236258 is about 304.5105758013.

The spelling of 28236258 in words is "twenty-eight million, two hundred thirty-six thousand, two hundred fifty-eight".