28025756 has 24 divisors (see below), whose sum is σ = 53857776. Its totient is φ = 12654720.

The previous prime is 28025749. The next prime is 28025791. The reversal of 28025756 is 65752082.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4880 + ... + 8936.

It is an arithmetic number, because the mean of its divisors is an integer number (2244074).

Almost surely, 2^28025756 is an apocalyptic number.

It is an amenable number.

28025756 is a deficient number, since it is larger than the sum of its proper divisors (25832020).

28025756 is a wasteful number, since it uses less digits than its factorization.

28025756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4229 (or 4227 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 28025756 is about 5293.9357759610. The cubic root of 28025756 is about 303.7519762554.

It can be divided in two parts, 2802 and 5756, that added together give a palindrome (8558).

The spelling of 28025756 in words is "twenty-eight million, twenty-five thousand, seven hundred fifty-six".