22502322 has 48 divisors (see below), whose sum is σ = 52071552. Its totient is φ = 6998400.

The previous prime is 22502299. The next prime is 22502353. The reversal of 22502322 is 22320522.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22502295 and 22502304.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45963 + ... + 46449.

It is an arithmetic number, because the mean of its divisors is an integer number (1084824).

Almost surely, 2^22502322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22502322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26035776).

22502322 is an abundant number, since it is smaller than the sum of its proper divisors (29569230).

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

22502322 is a wasteful number, since it uses less digits than its factorization.

22502322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 22502322 is about 4743.6612442290. The cubic root of 22502322 is about 282.3205198221.

Adding to 22502322 its reverse (22320522), we get a palindrome (44822844).

The spelling of 22502322 in words is "twenty-two million, five hundred two thousand, three hundred twenty-two".