28808292 has 24 divisors (see below), whose sum is σ = 67324096. Its totient is φ = 9587808.

The previous prime is 28808261. The next prime is 28808293. The reversal of 28808292 is 29280882.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28808292.

It is not an unprimeable number, because it can be changed into a prime (28808293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8418 + ... + 11334.

Almost surely, 2^28808292 is an apocalyptic number.

It is an amenable number.

28808292 is an abundant number, since it is smaller than the sum of its proper divisors (38515804).

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

28808292 is a wasteful number, since it uses less digits than its factorization.

28808292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747 (or 3745 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 28808292 is about 5367.3356518854. The cubic root of 28808292 is about 306.5531879022.

The spelling of 28808292 in words is "twenty-eight million, eight hundred eight thousand, two hundred ninety-two".