22663040 has 64 divisors (see below), whose sum is σ = 57393360. Its totient is φ = 8527872.

The previous prime is 22663033. The next prime is 22663051. The reversal of 22663040 is 4036622.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×22663040² = 1027226764083200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22662997 and 22663015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9839 + ... + 11921.

Almost surely, 2^22663040 is an apocalyptic number.

22663040 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 22663040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28696680).

22663040 is an abundant number, since it is smaller than the sum of its proper divisors (34730320).

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

22663040 is a wasteful number, since it uses less digits than its factorization.

22663040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119 (or 2107 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 22663040 is about 4760.5713942761. The cubic root of 22663040 is about 282.9910638257.

Adding to 22663040 its reverse (4036622), we get a palindrome (26699662).

The spelling of 22663040 in words is "twenty-two million, six hundred sixty-three thousand, forty".