22126660 has 24 divisors (see below), whose sum is σ = 47456640. Its totient is φ = 8661984.

The previous prime is 22126651. The next prime is 22126661. The reversal of 22126660 is 6662122.

22126660 = 663² + 664² + ... + 709².

It is not an unprimeable number, because it can be changed into a prime (22126661) 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, 10830 + ... + 12709.

It is an arithmetic number, because the mean of its divisors is an integer number (1977360).

Almost surely, 2^22126660 is an apocalyptic number.

22126660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22126660 is an abundant number, since it is smaller than the sum of its proper divisors (25329980).

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

22126660 is a wasteful number, since it uses less digits than its factorization.

22126660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23595 (or 23593 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 22126660 is about 4703.8983832562. The cubic root of 22126660 is about 280.7406412084.

Adding to 22126660 its reverse (6662122), we get a palindrome (28788782).

The spelling of 22126660 in words is "twenty-two million, one hundred twenty-six thousand, six hundred sixty".