22135140 has 96 divisors (see below), whose sum is σ = 69552000. Its totient is φ = 5844096.

The previous prime is 22135103. The next prime is 22135163. The reversal of 22135140 is 4153122.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96546 + ... + 96774.

It is an arithmetic number, because the mean of its divisors is an integer number (724500).

Almost surely, 2^22135140 is an apocalyptic number.

22135140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22135140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34776000).

22135140 is an abundant number, since it is smaller than the sum of its proper divisors (47416860).

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

22135140 is a wasteful number, since it uses less digits than its factorization.

22135140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 22135140 is about 4704.7996769257. The cubic root of 22135140 is about 280.7765010652.

Adding to 22135140 its reverse (4153122), we get a palindrome (26288262).

The spelling of 22135140 in words is "twenty-two million, one hundred thirty-five thousand, one hundred forty".