28261158 has 16 divisors (see below), whose sum is σ = 58980096. Its totient is φ = 9010760.

The previous prime is 28261141. The next prime is 28261169. The reversal of 28261158 is 85116282.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 102258 + ... + 102533.

It is an arithmetic number, because the mean of its divisors is an integer number (3686256).

Almost surely, 2^28261158 is an apocalyptic number.

28261158 is an abundant number, since it is smaller than the sum of its proper divisors (30718938).

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

28261158 is a wasteful number, since it uses less digits than its factorization.

28261158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204819.

The product of its digits is 7680, while the sum is 33.

The square root of 28261158 is about 5316.1224590861. The cubic root of 28261158 is about 304.6000598685.

The spelling of 28261158 in words is "twenty-eight million, two hundred sixty-one thousand, one hundred fifty-eight".