22690304 has 80 divisors (see below), whose sum is σ = 55913088. Its totient is φ = 8957952.

The previous prime is 22690303. The next prime is 22690321. The reversal of 22690304 is 40309622.

It is a super-2 number, since 2×22690304² = 1029699791224832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (22690303) 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, 46349 + ... + 46835.

Almost surely, 2^22690304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22690304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27956544).

22690304 is an abundant number, since it is smaller than the sum of its proper divisors (33222784).

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

22690304 is an equidigital number, since it uses as much as digits as its factorization.

22690304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 22690304 is about 4763.4340553848. The cubic root of 22690304 is about 283.1044992766.

Adding to 22690304 its reverse (40309622), we get a palindrome (62999926).

The spelling of 22690304 in words is "twenty-two million, six hundred ninety thousand, three hundred four".