22505384 has 16 divisors (see below), whose sum is σ = 46033920. Its totient is φ = 10229680.

The previous prime is 22505381. The next prime is 22505387. The reversal of 22505384 is 48350522.

It is an interprime number because it is at equal distance from previous prime (22505381) and next prime (22505387).

It is not an unprimeable number, because it can be changed into a prime (22505381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127784 + ... + 127959.

It is an arithmetic number, because the mean of its divisors is an integer number (2877120).

Almost surely, 2^22505384 is an apocalyptic number.

It is an amenable number.

22505384 is an abundant number, since it is smaller than the sum of its proper divisors (23528536).

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

22505384 is a wasteful number, since it uses less digits than its factorization.

22505384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255760 (or 255756 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 22505384 is about 4743.9839797369. The cubic root of 22505384 is about 282.3333248150. Note that the first 4 decimals are identical.

The spelling of 22505384 in words is "twenty-two million, five hundred five thousand, three hundred eighty-four".