22610809 has 8 divisors (see below), whose sum is σ = 24750152. Its totient is φ = 20528640.

The previous prime is 22610767. The next prime is 22610813. The reversal of 22610809 is 90801622.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 783225 + 21827584 = 885^2 + 4672^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22610809 is a prime.

It is a super-2 number, since 2×22610809² = 1022497367268962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26610809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13464 + ... + 15049.

It is an arithmetic number, because the mean of its divisors is an integer number (3093769).

Almost surely, 2^22610809 is an apocalyptic number.

It is an amenable number.

22610809 is a deficient number, since it is larger than the sum of its proper divisors (2139343).

22610809 is a wasteful number, since it uses less digits than its factorization.

22610809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28587.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 22610809 is about 4755.0824388227. The cubic root of 22610809 is about 282.7734955458.

The spelling of 22610809 in words is "twenty-two million, six hundred ten thousand, eight hundred nine".