28826258 has 4 divisors (see below), whose sum is σ = 43239390. Its totient is φ = 14413128.

The previous prime is 28826233. The next prime is 28826263. The reversal of 28826258 is 85262882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85262882 = 2 ⋅42631441.

It can be written as a sum of positive squares in only one way, i.e., 26801329 + 2024929 = 5177^2 + 1423^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7206563 + ... + 7206566.

Almost surely, 2^28826258 is an apocalyptic number.

28826258 is a deficient number, since it is larger than the sum of its proper divisors (14413132).

28826258 is a wasteful number, since it uses less digits than its factorization.

28826258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14413131.

The product of its digits is 122880, while the sum is 41.

The square root of 28826258 is about 5369.0090333319. The cubic root of 28826258 is about 306.6169009247.

The spelling of 28826258 in words is "twenty-eight million, eight hundred twenty-six thousand, two hundred fifty-eight".