22270385 has 4 divisors (see below), whose sum is σ = 26724468. Its totient is φ = 17816304.

The previous prime is 22270363. The next prime is 22270397. The reversal of 22270385 is 58307222.

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 15178816 + 7091569 = 3896^2 + 2663^2 .

It is a cyclic number.

It is not a de Polignac number, because 22270385 - 2¹⁶ = 22204849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2227034 + ... + 2227043.

It is an arithmetic number, because the mean of its divisors is an integer number (6681117).

Almost surely, 2^22270385 is an apocalyptic number.

It is an amenable number.

22270385 is a deficient number, since it is larger than the sum of its proper divisors (4454083).

22270385 is an equidigital number, since it uses as much as digits as its factorization.

22270385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4454082.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 22270385 is about 4719.1508770117. The cubic root of 22270385 is about 281.3471855085.

It can be divided in two parts, 222 and 70385, that added together give a palindrome (70607).

The spelling of 22270385 in words is "twenty-two million, two hundred seventy thousand, three hundred eighty-five".