22840384 has 56 divisors (see below), whose sum is σ = 54864000. Its totient is φ = 9209856.

The previous prime is 22840381. The next prime is 22840387. The reversal of 22840384 is 48304822.

It is an interprime number because it is at equal distance from previous prime (22840381) and next prime (22840387).

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22840381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6117 + ... + 9115.

Almost surely, 2^22840384 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 22840384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27432000).

22840384 is an abundant number, since it is smaller than the sum of its proper divisors (32023616).

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

22840384 is a wasteful number, since it uses less digits than its factorization.

22840384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3035 (or 3025 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 22840384 is about 4779.1614327202. The cubic root of 22840384 is about 283.7273055264.

The spelling of 22840384 in words is "twenty-two million, eight hundred forty thousand, three hundred eighty-four".