22406740 has 12 divisors (see below), whose sum is σ = 47054196. Its totient is φ = 8962688.

The previous prime is 22406717. The next prime is 22406753. The reversal of 22406740 is 4760422.

It can be written as a sum of positive squares in 2 ways, for example, as 10995856 + 11410884 = 3316^2 + 3378^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560149 + ... + 560188.

It is an arithmetic number, because the mean of its divisors is an integer number (3921183).

Almost surely, 2^22406740 is an apocalyptic number.

22406740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22406740 is an abundant number, since it is smaller than the sum of its proper divisors (24647456).

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

22406740 is a wasteful number, since it uses less digits than its factorization.

22406740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120346 (or 1120344 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 22406740 is about 4733.5758153852. The cubic root of 22406740 is about 281.9202195387.

The spelling of 22406740 in words is "twenty-two million, four hundred six thousand, seven hundred forty".