22200540 has 24 divisors (see below), whose sum is σ = 62161680. Its totient is φ = 5920128.

The previous prime is 22200527. The next prime is 22200547. The reversal of 22200540 is 4500222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200547) 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, 184945 + ... + 185064.

It is an arithmetic number, because the mean of its divisors is an integer number (2590070).

Almost surely, 2^22200540 is an apocalyptic number.

22200540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22200540 is an abundant number, since it is smaller than the sum of its proper divisors (39961140).

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

22200540 is a wasteful number, since it uses less digits than its factorization.

22200540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370021 (or 370019 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 22200540 is about 4711.7448997160. The cubic root of 22200540 is about 281.0527545402.

Adding to 22200540 its reverse (4500222), we get a palindrome (26700762).

The spelling of 22200540 in words is "twenty-two million, two hundred thousand, five hundred forty".