22635040 has 48 divisors (see below), whose sum is σ = 53825688. Its totient is φ = 8994816.

The previous prime is 22634999. The next prime is 22635043. The reversal of 22635040 is 4053622.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20903184 + 1731856 = 4572^2 + 1316^2 .

It is not an unprimeable number, because it can be changed into a prime (22635043) 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, 30514 + ... + 31246.

Almost surely, 2^22635040 is an apocalyptic number.

22635040 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 22635040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26912844).

22635040 is an abundant number, since it is smaller than the sum of its proper divisors (31190648).

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

22635040 is a wasteful number, since it uses less digits than its factorization.

22635040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941 (or 933 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 22635040 is about 4757.6296619220. The cubic root of 22635040 is about 282.8744714169.

Adding to 22635040 its reverse (4053622), we get a palindrome (26688662).

The spelling of 22635040 in words is "twenty-two million, six hundred thirty-five thousand, forty".