22236660 has 48 divisors (see below), whose sum is σ = 69182400. Its totient is φ = 5929632.

The previous prime is 22236659. The next prime is 22236671. The reversal of 22236660 is 6663222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20050 + ... + 21129.

It is an arithmetic number, because the mean of its divisors is an integer number (1441300).

Almost surely, 2^22236660 is an apocalyptic number.

22236660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22236660 is an abundant number, since it is smaller than the sum of its proper divisors (46945740).

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

22236660 is a wasteful number, since it uses less digits than its factorization.

22236660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41197 (or 41189 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 22236660 is about 4715.5763168461. The cubic root of 22236660 is about 281.2050950530.

Adding to 22236660 its reverse (6663222), we get a palindrome (28899882).

The spelling of 22236660 in words is "twenty-two million, two hundred thirty-six thousand, six hundred sixty".