22140576 has 72 divisors (see below), whose sum is σ = 64078560. Its totient is φ = 7249536.

The previous prime is 22140557. The next prime is 22140577. The reversal of 22140576 is 67504122.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×22140576² = 980410211223552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22140577) 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 11 ways as a sum of consecutive naturals, for example, 16341 + ... + 17643.

It is an arithmetic number, because the mean of its divisors is an integer number (889980).

Almost surely, 2^22140576 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 22140576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32039280).

22140576 is an abundant number, since it is smaller than the sum of its proper divisors (41937984).

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

22140576 is a wasteful number, since it uses less digits than its factorization.

22140576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378 (or 1367 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 22140576 is about 4705.3773493738. The cubic root of 22140576 is about 280.7994837695.

Adding to 22140576 its reverse (67504122), we get a palindrome (89644698).

The spelling of 22140576 in words is "twenty-two million, one hundred forty thousand, five hundred seventy-six".