28022124 has 48 divisors (see below), whose sum is σ = 70785792. Its totient is φ = 8576832.

The previous prime is 28022101. The next prime is 28022143. The reversal of 28022124 is 42122082.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28022124.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40687 + ... + 41369.

It is an arithmetic number, because the mean of its divisors is an integer number (1474704).

Almost surely, 2^28022124 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 28022124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35392896).

28022124 is an abundant number, since it is smaller than the sum of its proper divisors (42763668).

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

28022124 is a wasteful number, since it uses less digits than its factorization.

28022124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966 (or 964 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 28022124 is about 5293.5927308398. The cubic root of 28022124 is about 303.7388541017.

The spelling of 28022124 in words is "twenty-eight million, twenty-two thousand, one hundred twenty-four".