22828729 has 8 divisors (see below), whose sum is σ = 28461888. Its totient is φ = 17788560.

The previous prime is 22828711. The next prime is 22828763. The reversal of 22828729 is 92782822.

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 22828729 - 2⁹ = 22828217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22828691 and 22828700.

It is not an unprimeable number, because it can be changed into a prime (22823729) 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, 148162 + ... + 148315.

It is an arithmetic number, because the mean of its divisors is an integer number (3557736).

Almost surely, 2^22828729 is an apocalyptic number.

It is an amenable number.

22828729 is a deficient number, since it is larger than the sum of its proper divisors (5633159).

22828729 is a wasteful number, since it uses less digits than its factorization.

22828729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296495.

The product of its digits is 64512, while the sum is 40.

The square root of 22828729 is about 4777.9419209530. The cubic root of 22828729 is about 283.6790371556.

It can be divided in two parts, 2282 and 8729, that added together give a palindrome (11011).

The spelling of 22828729 in words is "twenty-two million, eight hundred twenty-eight thousand, seven hundred twenty-nine".