28256230 has 32 divisors (see below), whose sum is σ = 54005760. Its totient is φ = 10614240.

The previous prime is 28256201. The next prime is 28256231. The reversal of 28256230 is 3265282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28256231) 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, 23545 + ... + 24715.

It is an arithmetic number, because the mean of its divisors is an integer number (1687680).

Almost surely, 2^28256230 is an apocalyptic number.

28256230 is a deficient number, since it is larger than the sum of its proper divisors (25749530).

28256230 is a wasteful number, since it uses less digits than its factorization.

28256230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 28256230 is about 5315.6589431603. The cubic root of 28256230 is about 304.5823541025.

The spelling of 28256230 in words is "twenty-eight million, two hundred fifty-six thousand, two hundred thirty".