28025656 has 32 divisors (see below), whose sum is σ = 55928880. Its totient is φ = 13120000.

The previous prime is 28025633. The next prime is 28025659. The reversal of 28025656 is 65652082.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28025659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33726 + ... + 34546.

Almost surely, 2^28025656 is an apocalyptic number.

It is an amenable number.

28025656 is a deficient number, since it is larger than the sum of its proper divisors (27903224).

28025656 is a wasteful number, since it uses less digits than its factorization.

28025656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095 (or 1091 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 28025656 is about 5293.9263311837. The cubic root of 28025656 is about 303.7516149778.

The spelling of 28025656 in words is "twenty-eight million, twenty-five thousand, six hundred fifty-six".