28608408 has 48 divisors (see below), whose sum is σ = 78556920. Its totient is φ = 9403776.

The previous prime is 28608407. The next prime is 28608421. The reversal of 28608408 is 80480682.

28608408 is a `hidden beast` number, since 2 + 8 + 608 + 40 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28608403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2535 + ... + 7977.

Almost surely, 2^28608408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28608408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39278460).

28608408 is an abundant number, since it is smaller than the sum of its proper divisors (49948512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28608408 is a wasteful number, since it uses less digits than its factorization.

28608408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5528 (or 5521 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 28608408 is about 5348.6828285102. The cubic root of 28608408 is about 305.8425436242.

The spelling of 28608408 in words is "twenty-eight million, six hundred eight thousand, four hundred eight".