28858156 has 12 divisors (see below), whose sum is σ = 50676192. Its totient is φ = 14379248.

The previous prime is 28858133. The next prime is 28858157. The reversal of 28858156 is 65185882.

It is not an unprimeable number, because it can be changed into a prime (28858157) 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 3 ways as a sum of consecutive naturals, for example, 11140 + ... + 13483.

It is an arithmetic number, because the mean of its divisors is an integer number (4223016).

Almost surely, 2^28858156 is an apocalyptic number.

It is an amenable number.

28858156 is a deficient number, since it is larger than the sum of its proper divisors (21818036).

28858156 is a wasteful number, since it uses less digits than its factorization.

28858156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24920 (or 24918 counting only the distinct ones).

The product of its digits is 153600, while the sum is 43.

The square root of 28858156 is about 5371.9787788114. The cubic root of 28858156 is about 306.7299559567.

The spelling of 28858156 in words is "twenty-eight million, eight hundred fifty-eight thousand, one hundred fifty-six".