28635243 has 16 divisors (see below), whose sum is σ = 46991616. Its totient is φ = 15104160.

The previous prime is 28635137. The next prime is 28635283. The reversal of 28635243 is 34253682.

It is a happy number.

It is not a de Polignac number, because 28635243 - 2¹⁰ = 28634219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28635283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52173 + ... + 52718.

It is an arithmetic number, because the mean of its divisors is an integer number (2936976).

Almost surely, 2^28635243 is an apocalyptic number.

28635243 is a deficient number, since it is larger than the sum of its proper divisors (18356373).

28635243 is a wasteful number, since it uses less digits than its factorization.

28635243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104914.

The product of its digits is 34560, while the sum is 33.

The square root of 28635243 is about 5351.1908020552. The cubic root of 28635243 is about 305.9381416248.

The spelling of 28635243 in words is "twenty-eight million, six hundred thirty-five thousand, two hundred forty-three".