28075158 has 12 divisors (see below), whose sum is σ = 60829548. Its totient is φ = 9358380.

The previous prime is 28075129. The next prime is 28075169. The reversal of 28075158 is 85157082.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 779848 + ... + 779883.

It is an arithmetic number, because the mean of its divisors is an integer number (5069129).

Almost surely, 2^28075158 is an apocalyptic number.

28075158 is an abundant number, since it is smaller than the sum of its proper divisors (32754390).

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

28075158 is a wasteful number, since it uses less digits than its factorization.

28075158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559739 (or 1559736 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 28075158 is about 5298.5996263164. The cubic root of 28075158 is about 303.9303496367.

The spelling of 28075158 in words is "twenty-eight million, seventy-five thousand, one hundred fifty-eight".