28868468 has 12 divisors (see below), whose sum is σ = 50652420. Its totient is φ = 14396352.

The previous prime is 28868459. The next prime is 28868501. The reversal of 28868468 is 86486882.

It can be written as a sum of positive squares in 2 ways, for example, as 4048144 + 24820324 = 2012^2 + 4982^2 .

It is a congruent number.

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, 7721 + ... + 10832.

It is an arithmetic number, because the mean of its divisors is an integer number (4221035).

Almost surely, 2^28868468 is an apocalyptic number.

It is an amenable number.

28868468 is a deficient number, since it is larger than the sum of its proper divisors (21783952).

28868468 is a wasteful number, since it uses less digits than its factorization.

28868468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18946 (or 18944 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 50.

The square root of 28868468 is about 5372.9384883879. The cubic root of 28868468 is about 306.7664866187.

The spelling of 28868468 in words is "twenty-eight million, eight hundred sixty-eight thousand, four hundred sixty-eight".