22146449 has 4 divisors (see below), whose sum is σ = 23850036. Its totient is φ = 20442864.

The previous prime is 22146433. The next prime is 22146451. The reversal of 22146449 is 94464122.

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 13104400 + 9042049 = 3620^2 + 3007^2 .

It is not a de Polignac number, because 22146449 - 2⁴ = 22146433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22146469) by changing a digit.

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, 851774 + ... + 851799.

It is an arithmetic number, because the mean of its divisors is an integer number (5962509).

Almost surely, 2^22146449 is an apocalyptic number.

It is an amenable number.

22146449 is a deficient number, since it is larger than the sum of its proper divisors (1703587).

22146449 is a wasteful number, since it uses less digits than its factorization.

22146449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703586.

The product of its digits is 13824, while the sum is 32.

The square root of 22146449 is about 4706.0013812153. The cubic root of 22146449 is about 280.8243098260.

The spelling of 22146449 in words is "twenty-two million, one hundred forty-six thousand, four hundred forty-nine".