28536249 has 16 divisors (see below), whose sum is σ = 44098560. Its totient is φ = 16075920.

The previous prime is 28536241. The next prime is 28536269. The reversal of 28536249 is 94263582.

It is a happy number.

It is not a de Polignac number, because 28536249 - 2³ = 28536241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28536241) 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, 8079 + ... + 11060.

It is an arithmetic number, because the mean of its divisors is an integer number (2756160).

Almost surely, 2^28536249 is an apocalyptic number.

It is an amenable number.

28536249 is a deficient number, since it is larger than the sum of its proper divisors (15562311).

28536249 is a wasteful number, since it uses less digits than its factorization.

28536249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19220.

The product of its digits is 103680, while the sum is 39.

The square root of 28536249 is about 5341.9330770799. The cubic root of 28536249 is about 305.5851848636.

The spelling of 28536249 in words is "twenty-eight million, five hundred thirty-six thousand, two hundred forty-nine".