22605340 has 12 divisors (see below), whose sum is σ = 47471256. Its totient is φ = 9042128.

The previous prime is 22605313. The next prime is 22605347. The reversal of 22605340 is 4350622.

It is a happy number.

It is a super-2 number, since 2×22605340² = 1022002793031200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22605347) by changing a digit.

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, 565114 + ... + 565153.

It is an arithmetic number, because the mean of its divisors is an integer number (3955938).

Almost surely, 2^22605340 is an apocalyptic number.

22605340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22605340 is an abundant number, since it is smaller than the sum of its proper divisors (24865916).

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

22605340 is a wasteful number, since it uses less digits than its factorization.

22605340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130276 (or 1130274 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 22605340 is about 4754.5073351505. The cubic root of 22605340 is about 282.7506950502.

Adding to 22605340 its reverse (4350622), we get a palindrome (26955962).

The spelling of 22605340 in words is "twenty-two million, six hundred five thousand, three hundred forty".