22452729 has 8 divisors (see below), whose sum is σ = 32239872. Its totient is φ = 13817040.

The previous prime is 22452719. The next prime is 22452739. The reversal of 22452729 is 92725422.

It is an interprime number because it is at equal distance from previous prime (22452719) and next prime (22452739).

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

It is not a de Polignac number, because 22452729 - 2⁴ = 22452713 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 22452729.

It is not an unprimeable number, because it can be changed into a prime (22452719) 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, 287817 + ... + 287894.

It is an arithmetic number, because the mean of its divisors is an integer number (4029984).

Almost surely, 2^22452729 is an apocalyptic number.

It is an amenable number.

22452729 is a deficient number, since it is larger than the sum of its proper divisors (9787143).

22452729 is a wasteful number, since it uses less digits than its factorization.

22452729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575727.

The product of its digits is 20160, while the sum is 33.

The square root of 22452729 is about 4738.4310694575. The cubic root of 22452729 is about 282.1129646511.

The spelling of 22452729 in words is "twenty-two million, four hundred fifty-two thousand, seven hundred twenty-nine".