28252658 has 16 divisors (see below), whose sum is σ = 50982720. Its totient is φ = 11470896.

The previous prime is 28252613. The next prime is 28252661. The reversal of 28252658 is 85625282.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52841 + ... + 53372.

It is an arithmetic number, because the mean of its divisors is an integer number (3186420).

Almost surely, 2^28252658 is an apocalyptic number.

28252658 is a deficient number, since it is larger than the sum of its proper divisors (22730062).

28252658 is a wasteful number, since it uses less digits than its factorization.

28252658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106241.

The product of its digits is 76800, while the sum is 38.

The square root of 28252658 is about 5315.3229440929. The cubic root of 28252658 is about 304.5695190095.

The spelling of 28252658 in words is "twenty-eight million, two hundred fifty-two thousand, six hundred fifty-eight".