22709513 has 4 divisors (see below), whose sum is σ = 23094480. Its totient is φ = 22324548.

The previous prime is 22709483. The next prime is 22709521. The reversal of 22709513 is 31590722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22709513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22706513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192395 + ... + 192512.

It is an arithmetic number, because the mean of its divisors is an integer number (5773620).

Almost surely, 2^22709513 is an apocalyptic number.

It is an amenable number.

22709513 is a deficient number, since it is larger than the sum of its proper divisors (384967).

22709513 is an equidigital number, since it uses as much as digits as its factorization.

22709513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384966.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 22709513 is about 4765.4499262924. The cubic root of 22709513 is about 283.1843662901.

The spelling of 22709513 in words is "twenty-two million, seven hundred nine thousand, five hundred thirteen".