22660000 has 120 divisors (see below), whose sum is σ = 61405344. Its totient is φ = 8160000.

The previous prime is 22659983. The next prime is 22660019. The reversal of 22660000 is 6622.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a zygodrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 219949 + ... + 220051.

Almost surely, 2^22660000 is an apocalyptic number.

22660000 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 22660000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30702672).

22660000 is an abundant number, since it is smaller than the sum of its proper divisors (38745344).

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

22660000 is a wasteful number, since it uses less digits than its factorization.

22660000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 22660000 is about 4760.2520941648. The cubic root of 22660000 is about 282.9784098701.

Adding to 22660000 its reverse (6622), we get a palindrome (22666622).

The spelling of 22660000 in words is "twenty-two million, six hundred sixty thousand".