22444390 has 8 divisors (see below), whose sum is σ = 40399920. Its totient is φ = 8977752.

The previous prime is 22444381. The next prime is 22444391. The reversal of 22444390 is 9344422.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22444391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1122210 + ... + 1122229.

It is an arithmetic number, because the mean of its divisors is an integer number (5049990).

Almost surely, 2^22444390 is an apocalyptic number.

22444390 is a deficient number, since it is larger than the sum of its proper divisors (17955530).

22444390 is a wasteful number, since it uses less digits than its factorization.

22444390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244446.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 22444390 is about 4737.5510551339. The cubic root of 22444390 is about 282.0780345049.

The spelling of 22444390 in words is "twenty-two million, four hundred forty-four thousand, three hundred ninety".