22556709 has 24 divisors (see below), whose sum is σ = 38001600. Its totient is φ = 12887784.

The previous prime is 22556707. The next prime is 22556731. The reversal of 22556709 is 90765522.

It is not a de Polignac number, because 22556709 - 2¹ = 22556707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22556701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 567 + ... + 6740.

It is an arithmetic number, because the mean of its divisors is an integer number (1583400).

Almost surely, 2^22556709 is an apocalyptic number.

It is an amenable number.

22556709 is a deficient number, since it is larger than the sum of its proper divisors (15444891).

22556709 is an equidigital number, since it uses as much as digits as its factorization.

22556709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7334 (or 7317 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 22556709 is about 4749.3903819332. The cubic root of 22556709 is about 282.5477884018.

The spelling of 22556709 in words is "twenty-two million, five hundred fifty-six thousand, seven hundred nine".