22245784 has 64 divisors (see below), whose sum is σ = 49248000. Its totient is φ = 9313920.

The previous prime is 22245779. The next prime is 22245787. The reversal of 22245784 is 48754222.

Its product of digits (35840) is a multiple of the sum of its prime factors (448).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22245787) 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, 58507 + ... + 58885.

It is an arithmetic number, because the mean of its divisors is an integer number (769500).

Almost surely, 2^22245784 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 22245784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24624000).

22245784 is an abundant number, since it is smaller than the sum of its proper divisors (27002216).

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

22245784 is a wasteful number, since it uses less digits than its factorization.

22245784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 444 counting only the distinct ones).

The product of its digits is 35840, while the sum is 34.

The square root of 22245784 is about 4716.5436497503. The cubic root of 22245784 is about 281.2435505352.

It can be divided in two parts, 2224 and 5784, that added together give a palindrome (8008).

The spelling of 22245784 in words is "twenty-two million, two hundred forty-five thousand, seven hundred eighty-four".