22533709 has 6 divisors (see below), whose sum is σ = 24768590. Its totient is φ = 20485080.

The previous prime is 22533697. The next prime is 22533733. The reversal of 22533709 is 90733522.

It can be written as a sum of positive squares in only one way, i.e., 17197609 + 5336100 = 4147^2 + 2310^2 .

It is not a de Polignac number, because 22533709 - 2¹¹ = 22531661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22533799) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92994 + ... + 93235.

Almost surely, 2^22533709 is an apocalyptic number.

It is an amenable number.

22533709 is a deficient number, since it is larger than the sum of its proper divisors (2234881).

22533709 is a wasteful number, since it uses less digits than its factorization.

22533709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186251 (or 186240 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 22533709 is about 4746.9684009903. The cubic root of 22533709 is about 282.4517222432.

The spelling of 22533709 in words is "twenty-two million, five hundred thirty-three thousand, seven hundred nine".