22444385 has 8 divisors (see below), whose sum is σ = 27661416. Its totient is φ = 17470080.

The previous prime is 22444381. The next prime is 22444391. The reversal of 22444385 is 58344422.

It can be written as a sum of positive squares in 4 ways, for example, as 9541921 + 12902464 = 3089^2 + 3592^2 .

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

It is not a de Polignac number, because 22444385 - 2² = 22444381 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22444381) 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 7 ways as a sum of consecutive naturals, for example, 60476 + ... + 60845.

It is an arithmetic number, because the mean of its divisors is an integer number (3457677).

Almost surely, 2^22444385 is an apocalyptic number.

It is an amenable number.

22444385 is a deficient number, since it is larger than the sum of its proper divisors (5217031).

22444385 is a wasteful number, since it uses less digits than its factorization.

22444385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121363.

The product of its digits is 30720, while the sum is 32.

The square root of 22444385 is about 4737.5505274350. The cubic root of 22444385 is about 282.0780135585.

The spelling of 22444385 in words is "twenty-two million, four hundred forty-four thousand, three hundred eighty-five".