28808408 has 16 divisors (see below), whose sum is σ = 56859000. Its totient is φ = 13646016.

The previous prime is 28808407. The next prime is 28808411. The reversal of 28808408 is 80480882.

28808408 is nontrivially palindromic in base 13.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28808407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94613 + ... + 94916.

Almost surely, 2^28808408 is an apocalyptic number.

It is an amenable number.

28808408 is a deficient number, since it is larger than the sum of its proper divisors (28050592).

28808408 is a wasteful number, since it uses less digits than its factorization.

28808408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189554 (or 189550 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 38.

The square root of 28808408 is about 5367.3464579809. The cubic root of 28808408 is about 306.5535993593.

The spelling of 28808408 in words is "twenty-eight million, eight hundred eight thousand, four hundred eight".