28488868 has 24 divisors (see below), whose sum is σ = 50791104. Its totient is φ = 13980000.

The previous prime is 28488827. The next prime is 28488877. The reversal of 28488868 is 86888482.

It is a happy 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, 60771 + ... + 61237.

It is an arithmetic number, because the mean of its divisors is an integer number (2116296).

Almost surely, 2^28488868 is an apocalyptic number.

It is an amenable number.

28488868 is a deficient number, since it is larger than the sum of its proper divisors (22302236).

28488868 is a wasteful number, since it uses less digits than its factorization.

28488868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723 (or 721 counting only the distinct ones).

The product of its digits is 1572864, while the sum is 52.

The square root of 28488868 is about 5337.4964168606. The cubic root of 28488868 is about 305.4159620556.

The spelling of 28488868 in words is "twenty-eight million, four hundred eighty-eight thousand, eight hundred sixty-eight".