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22444138 = 241273709
BaseRepresentation
bin101010110011…
…1100001101010
31120020021120101
41111213201222
521221203023
62121020014
7361525543
oct125474152
946207511
1022444138
111173a682
12762460a
13485aa72
142da34ca
151e851ad
hex156786a

22444138 has 8 divisors (see below), whose sum is σ = 34487460. Its totient is φ = 10948320.

The previous prime is 22444127. The next prime is 22444153. The reversal of 22444138 is 83144422.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22401289 + 42849 = 4733^2 + 207^2 .

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

It is an unprimeable number.

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, 136773 + ... + 136936.

Almost surely, 222444138 is an apocalyptic number.

22444138 is a deficient number, since it is larger than the sum of its proper divisors (12043322).

22444138 is a wasteful number, since it uses less digits than its factorization.

22444138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273752.

The product of its digits is 6144, while the sum is 28.

The square root of 22444138 is about 4737.5244590398. The cubic root of 22444138 is about 282.0769788004.

The spelling of 22444138 in words is "twenty-two million, four hundred forty-four thousand, one hundred thirty-eight".

Divisors: 1 2 41 82 273709 547418 11222069 22444138