22609140 has 24 divisors (see below), whose sum is σ = 63305760. Its totient is φ = 6029088.

The previous prime is 22609129. The next prime is 22609141. The reversal of 22609140 is 4190622.

It is a super-2 number, since 2×22609140² = 1022346423079200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22609140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22609141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188350 + ... + 188469.

It is an arithmetic number, because the mean of its divisors is an integer number (2637740).

Almost surely, 2^22609140 is an apocalyptic number.

22609140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22609140 is an abundant number, since it is smaller than the sum of its proper divisors (40696620).

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

22609140 is a wasteful number, since it uses less digits than its factorization.

22609140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376831 (or 376829 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 22609140 is about 4754.9069391524. The cubic root of 22609140 is about 282.7665378030.

Adding to 22609140 its reverse (4190622), we get a palindrome (26799762).

The spelling of 22609140 in words is "twenty-two million, six hundred nine thousand, one hundred forty".