22840128 has 84 divisors (see below), whose sum is σ = 68945760. Its totient is φ = 7209216.

The previous prime is 22840123. The next prime is 22840133. The reversal of 22840128 is 82104822.

It is an interprime number because it is at equal distance from previous prime (22840123) and next prime (22840133).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22840121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9901 + ... + 11987.

Almost surely, 2^22840128 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 22840128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34472880).

22840128 is an abundant number, since it is smaller than the sum of its proper divisors (46105632).

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

22840128 is a wasteful number, since it uses less digits than its factorization.

22840128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124 (or 2111 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 22840128 is about 4779.1346497039. The cubic root of 22840128 is about 283.7262454967.

The spelling of 22840128 in words is "twenty-two million, eight hundred forty thousand, one hundred twenty-eight".