22540230 has 48 divisors (see below), whose sum is σ = 61158240. Its totient is φ = 5748864.

The previous prime is 22540169. The next prime is 22540237. The reversal of 22540230 is 3204522.

It is a super-3 number, since 3×22540230³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22540237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3375 + ... + 7514.

It is an arithmetic number, because the mean of its divisors is an integer number (1274130).

Almost surely, 2^22540230 is an apocalyptic number.

22540230 is an abundant number, since it is smaller than the sum of its proper divisors (38618010).

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

22540230 is a wasteful number, since it uses less digits than its factorization.

22540230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10925 (or 10922 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 22540230 is about 4747.6552107330. The cubic root of 22540230 is about 282.4789657245.

Adding to 22540230 its reverse (3204522), we get a palindrome (25744752).

The spelling of 22540230 in words is "twenty-two million, five hundred forty thousand, two hundred thirty".