22345729 has 8 divisors (see below), whose sum is σ = 26882240. Its totient is φ = 18145296.

The previous prime is 22345723. The next prime is 22345751. The reversal of 22345729 is 92754322.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22345729 - 2¹³ = 22337537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22345694 and 22345703.

It is not an unprimeable number, because it can be changed into a prime (22345723) 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, 83874 + ... + 84139.

It is an arithmetic number, because the mean of its divisors is an integer number (3360280).

Almost surely, 2^22345729 is an apocalyptic number.

It is an amenable number.

22345729 is a deficient number, since it is larger than the sum of its proper divisors (4536511).

22345729 is a wasteful number, since it uses less digits than its factorization.

22345729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168039.

The product of its digits is 30240, while the sum is 34.

The square root of 22345729 is about 4727.1269286957. The cubic root of 22345729 is about 281.6641080651.

The spelling of 22345729 in words is "twenty-two million, three hundred forty-five thousand, seven hundred twenty-nine".