22840509 has 8 divisors (see below), whose sum is σ = 31028832. Its totient is φ = 14939600.

The previous prime is 22840483. The next prime is 22840511. The reversal of 22840509 is 90504822.

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 22840509 - 2⁷ = 22840381 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 (22840309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71667 + ... + 71984.

It is an arithmetic number, because the mean of its divisors is an integer number (3878604).

Almost surely, 2^22840509 is an apocalyptic number.

It is an amenable number.

22840509 is a deficient number, since it is larger than the sum of its proper divisors (8188323).

22840509 is a wasteful number, since it uses less digits than its factorization.

22840509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143707.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 22840509 is about 4779.1745103103. The cubic root of 22840509 is about 283.7278231162.

The spelling of 22840509 in words is "twenty-two million, eight hundred forty thousand, five hundred nine".