28145022 has 16 divisors (see below), whose sum is σ = 58231440. Its totient is φ = 9058112.

The previous prime is 28145021. The next prime is 28145027. The reversal of 28145022 is 22054182.

It is a junction number, because it is equal to n+sod(n) for n = 28144983 and 28145001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28145021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80703 + ... + 81050.

It is an arithmetic number, because the mean of its divisors is an integer number (3639465).

Almost surely, 2^28145022 is an apocalyptic number.

28145022 is an abundant number, since it is smaller than the sum of its proper divisors (30086418).

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

28145022 is a wasteful number, since it uses less digits than its factorization.

28145022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161787.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 28145022 is about 5305.1882153228. The cubic root of 28145022 is about 304.1822473118.

The spelling of 28145022 in words is "twenty-eight million, one hundred forty-five thousand, twenty-two".