28526137 has 12 divisors (see below), whose sum is σ = 29759724. Its totient is φ = 27331200.

The previous prime is 28526129. The next prime is 28526171. The reversal of 28526137 is 73162582.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5973136 + 22553001 = 2444^2 + 4749^2 .

It is not a de Polignac number, because 28526137 - 2³ = 28526129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28526437) 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 11 ways as a sum of consecutive naturals, for example, 282387 + ... + 282487.

It is an arithmetic number, because the mean of its divisors is an integer number (2479977).

Almost surely, 2^28526137 is an apocalyptic number.

It is an amenable number.

28526137 is a deficient number, since it is larger than the sum of its proper divisors (1233587).

28526137 is an equidigital number, since it uses as much as digits as its factorization.

28526137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 227 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 28526137 is about 5340.9865193614. The cubic root of 28526137 is about 305.5490852526.

The spelling of 28526137 in words is "twenty-eight million, five hundred twenty-six thousand, one hundred thirty-seven".