28526138 has 8 divisors (see below), whose sum is σ = 44169600. Its totient is φ = 13802940.

The previous prime is 28526129. The next prime is 28526171. The reversal of 28526138 is 83162582.

It is a sphenic number, since it is the product of 3 distinct primes.

28526138 is a modest number, since divided by 6138 gives 2852 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 28526098 and 28526107.

It is an unprimeable number.

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, 229988 + ... + 230111.

It is an arithmetic number, because the mean of its divisors is an integer number (5521200).

Almost surely, 2^28526138 is an apocalyptic number.

28526138 is a deficient number, since it is larger than the sum of its proper divisors (15643462).

28526138 is a wasteful number, since it uses less digits than its factorization.

28526138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460132.

The product of its digits is 23040, while the sum is 35.

The square root of 28526138 is about 5340.9866129770. The cubic root of 28526138 is about 305.5490888230.

The spelling of 28526138 in words is "twenty-eight million, five hundred twenty-six thousand, one hundred thirty-eight".