22440226 has 8 divisors (see below), whose sum is σ = 35123904. Its totient is φ = 10732260.

The previous prime is 22440179. The next prime is 22440239. The reversal of 22440226 is 62204422.

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

It is a junction number, because it is equal to n+sod(n) for n = 22440197 and 22440206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243870 + ... + 243961.

It is an arithmetic number, because the mean of its divisors is an integer number (4390488).

Almost surely, 2^22440226 is an apocalyptic number.

22440226 is a deficient number, since it is larger than the sum of its proper divisors (12683678).

22440226 is a wasteful number, since it uses less digits than its factorization.

22440226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487856.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 22440226 is about 4737.1115671894. Note that the first 3 decimals coincide. The cubic root of 22440226 is about 282.0605892312.

Adding to 22440226 its reverse (62204422), we get a palindrome (84644648).

The spelling of 22440226 in words is "twenty-two million, four hundred forty thousand, two hundred twenty-six".