22540384 has 48 divisors (see below), whose sum is σ = 47234880. Its totient is φ = 10558080.

The previous prime is 22540373. The next prime is 22540387. The reversal of 22540384 is 48304522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22540387) 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, 79507 + ... + 79789.

It is an arithmetic number, because the mean of its divisors is an integer number (984060).

Almost surely, 2^22540384 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 22540384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23617440).

22540384 is an abundant number, since it is smaller than the sum of its proper divisors (24694496).

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

22540384 is a wasteful number, since it uses less digits than its factorization.

22540384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 22540384 is about 4747.6714292377. The cubic root of 22540384 is about 282.4796090433.

The spelling of 22540384 in words is "twenty-two million, five hundred forty thousand, three hundred eighty-four".