28022592 has 112 divisors (see below), whose sum is σ = 81361280. Its totient is φ = 8460288.

The previous prime is 28022591. The next prime is 28022593. The reversal of 28022592 is 29522082.

It is an interprime number because it is at equal distance from previous prime (28022591) and next prime (28022593).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28022591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257034 + ... + 257142.

It is an arithmetic number, because the mean of its divisors is an integer number (726440).

Almost surely, 2^28022592 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 28022592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40680640).

28022592 is an abundant number, since it is smaller than the sum of its proper divisors (53338688).

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

28022592 is a wasteful number, since it uses less digits than its factorization.

28022592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 28022592 is about 5293.6369350381. The cubic root of 28022592 is about 303.7405450155.

The spelling of 28022592 in words is "twenty-eight million, twenty-two thousand, five hundred ninety-two".