22809765 has 16 divisors (see below), whose sum is σ = 39813696. Its totient is φ = 11059200.

The previous prime is 22809763. The next prime is 22809779. The reversal of 22809765 is 56790822.

It is a happy number.

It is not a de Polignac number, because 22809765 - 2¹ = 22809763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22809763) 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, 68956 + ... + 69285.

It is an arithmetic number, because the mean of its divisors is an integer number (2488356).

Almost surely, 2^22809765 is an apocalyptic number.

It is an amenable number.

22809765 is a deficient number, since it is larger than the sum of its proper divisors (17003931).

22809765 is a wasteful number, since it uses less digits than its factorization.

22809765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138260.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 22809765 is about 4775.9569721680. The cubic root of 22809765 is about 283.6004639449.

The spelling of 22809765 in words is "twenty-two million, eight hundred nine thousand, seven hundred sixty-five".