22145306 has 8 divisors (see below), whose sum is σ = 33292020. Its totient is φ = 11047968.

The previous prime is 22145293. The next prime is 22145311. The reversal of 22145306 is 60354122.

It can be written as a sum of positive squares in 2 ways, for example, as 22137025 + 8281 = 4705^2 + 91^2 .

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

It is a Curzon 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, 11201 + ... + 13028.

Almost surely, 2^22145306 is an apocalyptic number.

22145306 is a deficient number, since it is larger than the sum of its proper divisors (11146714).

22145306 is a wasteful number, since it uses less digits than its factorization.

22145306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24688.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 22145306 is about 4705.8799389700. The cubic root of 22145306 is about 280.8194785367.

Adding to 22145306 its reverse (60354122), we get a palindrome (82499428).

The spelling of 22145306 in words is "twenty-two million, one hundred forty-five thousand, three hundred six".