22456709 has 4 divisors (see below), whose sum is σ = 24498240. Its totient is φ = 20415180.

The previous prime is 22456697. The next prime is 22456751. The reversal of 22456709 is 90765422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22456709 - 2¹² = 22452613 is a prime.

It is a super-2 number, since 2×22456709² = 1008607558221362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22456009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1020749 + ... + 1020770.

It is an arithmetic number, because the mean of its divisors is an integer number (6124560).

Almost surely, 2^22456709 is an apocalyptic number.

It is an amenable number.

22456709 is a deficient number, since it is larger than the sum of its proper divisors (2041531).

22456709 is a wasteful number, since it uses less digits than its factorization.

22456709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041530.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 22456709 is about 4738.8510210810. The cubic root of 22456709 is about 282.1296329035.

The spelling of 22456709 in words is "twenty-two million, four hundred fifty-six thousand, seven hundred nine".