22405260 has 48 divisors (see below), whose sum is σ = 63022176. Its totient is φ = 5947392.

The previous prime is 22405249. The next prime is 22405261. The reversal of 22405260 is 6250422.

It is not an unprimeable number, because it can be changed into a prime (22405261) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 14694 + ... + 16146.

It is an arithmetic number, because the mean of its divisors is an integer number (1312962).

Almost surely, 2^22405260 is an apocalyptic number.

22405260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22405260 is an abundant number, since it is smaller than the sum of its proper divisors (40616916).

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

22405260 is a wasteful number, since it uses less digits than its factorization.

22405260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722 (or 1720 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 22405260 is about 4733.4194827841. The cubic root of 22405260 is about 281.9140123125.

Adding to 22405260 its reverse (6250422), we get a palindrome (28655682).

The spelling of 22405260 in words is "twenty-two million, four hundred five thousand, two hundred sixty".