28821068 has 12 divisors (see below), whose sum is σ = 50771952. Its totient is φ = 14314800.

The previous prime is 28821049. The next prime is 28821071. The reversal of 28821068 is 86012882.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23255 + ... + 24462.

It is an arithmetic number, because the mean of its divisors is an integer number (4230996).

Almost surely, 2^28821068 is an apocalyptic number.

It is an amenable number.

28821068 is a deficient number, since it is larger than the sum of its proper divisors (21950884).

28821068 is a wasteful number, since it uses less digits than its factorization.

28821068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47872 (or 47870 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 28821068 is about 5368.5256821589. The cubic root of 28821068 is about 306.5984982907.

The spelling of 28821068 in words is "twenty-eight million, eight hundred twenty-one thousand, sixty-eight".