22650729 has 4 divisors (see below), whose sum is σ = 30200976. Its totient is φ = 15100484.

The previous prime is 22650713. The next prime is 22650731. The reversal of 22650729 is 92705622.

It is a happy number.

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 22650729 - 2⁴ = 22650713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22650729.

It is not an unprimeable number, because it can be changed into a prime (22650709) 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, 3775119 + ... + 3775124.

It is an arithmetic number, because the mean of its divisors is an integer number (7550244).

Almost surely, 2^22650729 is an apocalyptic number.

It is an amenable number.

22650729 is a deficient number, since it is larger than the sum of its proper divisors (7550247).

22650729 is an equidigital number, since it uses as much as digits as its factorization.

22650729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7550246.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 22650729 is about 4759.2782015764. The cubic root of 22650729 is about 282.9398124781.

The spelling of 22650729 in words is "twenty-two million, six hundred fifty thousand, seven hundred twenty-nine".