22550140 has 12 divisors (see below), whose sum is σ = 47355336. Its totient is φ = 9020048.

The previous prime is 22550119. The next prime is 22550147. The reversal of 22550140 is 4105522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22550147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563734 + ... + 563773.

It is an arithmetic number, because the mean of its divisors is an integer number (3946278).

Almost surely, 2^22550140 is an apocalyptic number.

22550140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22550140 is an abundant number, since it is smaller than the sum of its proper divisors (24805196).

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

22550140 is a wasteful number, since it uses less digits than its factorization.

22550140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127516 (or 1127514 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 22550140 is about 4748.6987691367. The cubic root of 22550140 is about 282.5203577362.

Adding to 22550140 its reverse (4105522), we get a palindrome (26655662).

The spelling of 22550140 in words is "twenty-two million, five hundred fifty thousand, one hundred forty".