28868408 has 8 divisors (see below), whose sum is σ = 54128280. Its totient is φ = 14434200.

The previous prime is 28868407. The next prime is 28868419. The reversal of 28868408 is 80486882.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28868407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1804268 + ... + 1804283.

It is an arithmetic number, because the mean of its divisors is an integer number (6766035).

Almost surely, 2^28868408 is an apocalyptic number.

It is an amenable number.

28868408 is a deficient number, since it is larger than the sum of its proper divisors (25259872).

28868408 is a wasteful number, since it uses less digits than its factorization.

28868408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3608557 (or 3608553 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 44.

The square root of 28868408 is about 5372.9329048482. The cubic root of 28868408 is about 306.7662740916.

The spelling of 28868408 in words is "twenty-eight million, eight hundred sixty-eight thousand, four hundred eight".