28868296 has 32 divisors (see below), whose sum is σ = 57276000. Its totient is φ = 13602816.

The previous prime is 28868269. The next prime is 28868299. The reversal of 28868296 is 69286882.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (28868299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38695 + ... + 39433.

It is an arithmetic number, because the mean of its divisors is an integer number (1789875).

Almost surely, 2^28868296 is an apocalyptic number.

It is an amenable number.

28868296 is a deficient number, since it is larger than the sum of its proper divisors (28407704).

28868296 is a wasteful number, since it uses less digits than its factorization.

28868296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021 (or 1017 counting only the distinct ones).

The product of its digits is 663552, while the sum is 49.

The square root of 28868296 is about 5372.9224822251. The cubic root of 28868296 is about 306.7658773734.

The spelling of 28868296 in words is "twenty-eight million, eight hundred sixty-eight thousand, two hundred ninety-six".