22471264 has 48 divisors (see below), whose sum is σ = 46061568. Its totient is φ = 10783872.

The previous prime is 22471261. The next prime is 22471291. The reversal of 22471264 is 46217422.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22471261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100657 + ... + 100879.

It is an arithmetic number, because the mean of its divisors is an integer number (959616).

Almost surely, 2^22471264 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 22471264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23030784).

22471264 is an abundant number, since it is smaller than the sum of its proper divisors (23590304).

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

22471264 is a wasteful number, since it uses less digits than its factorization.

22471264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 339 counting only the distinct ones).

The product of its digits is 5376, while the sum is 28.

The square root of 22471264 is about 4740.3864821341. The cubic root of 22471264 is about 282.1905725238.

Adding to 22471264 its reverse (46217422), we get a palindrome (68688686).

The spelling of 22471264 in words is "twenty-two million, four hundred seventy-one thousand, two hundred sixty-four".