22130785 has 4 divisors (see below), whose sum is σ = 26556948. Its totient is φ = 17704624.

The previous prime is 22130777. The next prime is 22130791. The reversal of 22130785 is 58703122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10131489 + 11999296 = 3183^2 + 3464^2 .

It is a cyclic number.

It is not a de Polignac number, because 22130785 - 2³ = 22130777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2213074 + ... + 2213083.

It is an arithmetic number, because the mean of its divisors is an integer number (6639237).

Almost surely, 2^22130785 is an apocalyptic number.

It is an amenable number.

22130785 is a deficient number, since it is larger than the sum of its proper divisors (4426163).

22130785 is an equidigital number, since it uses as much as digits as its factorization.

22130785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4426162.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 22130785 is about 4704.3368289271. The cubic root of 22130785 is about 280.7580859740.

The spelling of 22130785 in words is "twenty-two million, one hundred thirty thousand, seven hundred eighty-five".