22705513 has 8 divisors (see below), whose sum is σ = 24484320. Its totient is φ = 20985120.

The previous prime is 22705493. The next prime is 22705517. The reversal of 22705513 is 31550722.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-22705513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22705517) 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, 13795 + ... + 15352.

It is an arithmetic number, because the mean of its divisors is an integer number (3060540).

Almost surely, 2^22705513 is an apocalyptic number.

It is an amenable number.

22705513 is a deficient number, since it is larger than the sum of its proper divisors (1778807).

22705513 is a wasteful number, since it uses less digits than its factorization.

22705513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29207.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 22705513 is about 4765.0302202609. The cubic root of 22705513 is about 283.1677388387.

The spelling of 22705513 in words is "twenty-two million, seven hundred five thousand, five hundred thirteen".