22013709 has 8 divisors (see below), whose sum is σ = 29905632. Its totient is φ = 14398800.

The previous prime is 22013701. The next prime is 22013711. The reversal of 22013709 is 90731022.

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

It is not a de Polignac number, because 22013709 - 2³ = 22013701 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22013701) 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, 69067 + ... + 69384.

It is an arithmetic number, because the mean of its divisors is an integer number (3738204).

Almost surely, 2^22013709 is an apocalyptic number.

It is an amenable number.

22013709 is a deficient number, since it is larger than the sum of its proper divisors (7891923).

22013709 is a wasteful number, since it uses less digits than its factorization.

22013709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138507.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 22013709 is about 4691.8769165442. The cubic root of 22013709 is about 280.2621227338.

It can be divided in two parts, 22013 and 709, that added together give a palindrome (22722).

The spelling of 22013709 in words is "twenty-two million, thirteen thousand, seven hundred nine".