28922256 has 180 divisors, whose sum is σ = 96042960. Its totient is φ = 8035200.

The previous prime is 28922233. The next prime is 28922269. The reversal of 28922256 is 65222982.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28922256.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 932961 + ... + 932991.

It is an arithmetic number, because the mean of its divisors is an integer number (533572).

Almost surely, 2^28922256 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 28922256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48021480).

28922256 is an abundant number, since it is smaller than the sum of its proper divisors (67120704).

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

28922256 is a wasteful number, since it uses less digits than its factorization.

28922256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 66 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 28922256 is about 5377.9416136660. The cubic root of 28922256 is about 306.9568918099.

The spelling of 28922256 in words is "twenty-eight million, nine hundred twenty-two thousand, two hundred fifty-six".