22040576 has 26 divisors (see below), whose sum is σ = 44083962. Its totient is φ = 11018240.

The previous prime is 22040573. The next prime is 22040593. The reversal of 22040576 is 67504022.

It can be written as a sum of positive squares in only one way, i.e., 17305600 + 4734976 = 4160^2 + 2176^2 .

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22040573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1406 + ... + 6786.

It is an arithmetic number, because the mean of its divisors is an integer number (1695537).

Almost surely, 2^22040576 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 22040576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22041981).

22040576 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22040576 is an frugal number, since it uses more digits than its factorization.

22040576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5405 (or 5383 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 22040576 is about 4694.7391833839. The cubic root of 22040576 is about 280.3760932485.

Adding to 22040576 its reverse (67504022), we get a palindrome (89544598).

The spelling of 22040576 in words is "twenty-two million, forty thousand, five hundred seventy-six".