22461309 has 12 divisors (see below), whose sum is σ = 34939996. Its totient is φ = 13822272.

The previous prime is 22461269. The next prime is 22461311. The reversal of 22461309 is 90316422.

It can be written as a sum of positive squares in 2 ways, for example, as 4796100 + 17665209 = 2190^2 + 4203^2 .

It is not a de Polignac number, because 22461309 - 2²³ = 14072701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22461389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95872 + ... + 96105.

Almost surely, 2^22461309 is an apocalyptic number.

It is an amenable number.

22461309 is a deficient number, since it is larger than the sum of its proper divisors (12478687).

22461309 is a wasteful number, since it uses less digits than its factorization.

22461309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191996 (or 191993 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 22461309 is about 4739.3363459455. The cubic root of 22461309 is about 282.1488952645.

The spelling of 22461309 in words is "twenty-two million, four hundred sixty-one thousand, three hundred nine".