28908422 has 8 divisors (see below), whose sum is σ = 43792272. Its totient is φ = 14311000.

The previous prime is 28908421. The next prime is 28908469. The reversal of 28908422 is 22480982.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28908421) 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 3 ways as a sum of consecutive naturals, for example, 71354 + ... + 71757.

It is an arithmetic number, because the mean of its divisors is an integer number (5474034).

Almost surely, 2^28908422 is an apocalyptic number.

28908422 is a deficient number, since it is larger than the sum of its proper divisors (14883850).

28908422 is a wasteful number, since it uses less digits than its factorization.

28908422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143214.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 28908422 is about 5376.6552800045. The cubic root of 28908422 is about 306.9079431286.

The spelling of 28908422 in words is "twenty-eight million, nine hundred eight thousand, four hundred twenty-two".