28858756 has 12 divisors (see below), whose sum is σ = 50975568. Its totient is φ = 14294312.

The previous prime is 28858751. The next prime is 28858759. The reversal of 28858756 is 65785882.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28858751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33286 + ... + 34141.

It is an arithmetic number, because the mean of its divisors is an integer number (4247964).

Almost surely, 2^28858756 is an apocalyptic number.

It is an amenable number.

28858756 is a deficient number, since it is larger than the sum of its proper divisors (22116812).

28858756 is a wasteful number, since it uses less digits than its factorization.

28858756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67538 (or 67536 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 49.

The square root of 28858756 is about 5372.0346238646. The cubic root of 28858756 is about 306.7320817185.

The spelling of 28858756 in words is "twenty-eight million, eight hundred fifty-eight thousand, seven hundred fifty-six".