28808422 has 8 divisors (see below), whose sum is σ = 44380656. Its totient is φ = 14014872.

The previous prime is 28808419. The next prime is 28808431. The reversal of 28808422 is 22480882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194578 + ... + 194725.

It is an arithmetic number, because the mean of its divisors is an integer number (5547582).

Almost surely, 2^28808422 is an apocalyptic number.

28808422 is a deficient number, since it is larger than the sum of its proper divisors (15572234).

28808422 is a wasteful number, since it uses less digits than its factorization.

28808422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389342.

The product of its (nonzero) digits is 16384, while the sum is 34.

The square root of 28808422 is about 5367.3477621634. The cubic root of 28808422 is about 306.5536490178.

The spelling of 28808422 in words is "twenty-eight million, eight hundred eight thousand, four hundred twenty-two".