28856253 has 8 divisors (see below), whose sum is σ = 38500000. Its totient is φ = 19225008.

The previous prime is 28856209. The next prime is 28856273. The reversal of 28856253 is 35265882.

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

It is not a de Polignac number, because 28856253 - 2⁸ = 28855997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28856273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6498 + ... + 9996.

It is an arithmetic number, because the mean of its divisors is an integer number (4812500).

Almost surely, 2^28856253 is an apocalyptic number.

It is an amenable number.

28856253 is a deficient number, since it is larger than the sum of its proper divisors (9643747).

28856253 is a wasteful number, since it uses less digits than its factorization.

28856253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6251.

The product of its digits is 115200, while the sum is 39.

The square root of 28856253 is about 5371.8016530769. The cubic root of 28856253 is about 306.7232135539.

The spelling of 28856253 in words is "twenty-eight million, eight hundred fifty-six thousand, two hundred fifty-three".