28858744 has 16 divisors (see below), whose sum is σ = 56463120. Its totient is φ = 13801920.

The previous prime is 28858733. The next prime is 28858747. The reversal of 28858744 is 44785882.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 28858694 and 28858703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28858747) 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 3 ways as a sum of consecutive naturals, for example, 78237 + ... + 78604.

It is an arithmetic number, because the mean of its divisors is an integer number (3528945).

Almost surely, 2^28858744 is an apocalyptic number.

It is an amenable number.

28858744 is a deficient number, since it is larger than the sum of its proper divisors (27604376).

28858744 is a wasteful number, since it uses less digits than its factorization.

28858744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156870 (or 156866 counting only the distinct ones).

The product of its digits is 573440, while the sum is 46.

The square root of 28858744 is about 5372.0335069692. The cubic root of 28858744 is about 306.7320392036.

The spelling of 28858744 in words is "twenty-eight million, eight hundred fifty-eight thousand, seven hundred forty-four".