22640130 has 48 divisors (see below), whose sum is σ = 59439744. Its totient is φ = 5978400.

The previous prime is 22640113. The next prime is 22640131. The reversal of 22640130 is 3104622.

It is a happy number.

22640130 is a `hidden beast` number, since 22 + 640 + 1 + 3 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (22640131) 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 23 ways as a sum of consecutive naturals, for example, 8455 + ... + 10805.

It is an arithmetic number, because the mean of its divisors is an integer number (1238328).

Almost surely, 2^22640130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22640130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29719872).

22640130 is an abundant number, since it is smaller than the sum of its proper divisors (36799614).

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

22640130 is a wasteful number, since it uses less digits than its factorization.

22640130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2471 (or 2468 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 22640130 is about 4758.1645620974. The cubic root of 22640130 is about 282.8956733991.

Adding to 22640130 its reverse (3104622), we get a palindrome (25744752).

The spelling of 22640130 in words is "twenty-two million, six hundred forty thousand, one hundred thirty".