22007826 has 96 divisors (see below), whose sum is σ = 54587520. Its totient is φ = 6369792.

The previous prime is 22007807. The next prime is 22007827. The reversal of 22007826 is 62870022.

It is a self number, because there is not a number n which added to its sum of digits gives 22007826.

It is not an unprimeable number, because it can be changed into a prime (22007827) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 372985 + ... + 373043.

It is an arithmetic number, because the mean of its divisors is an integer number (568620).

Almost surely, 2^22007826 is an apocalyptic number.

22007826 is the 2346-th decagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22007826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27293760).

22007826 is an abundant number, since it is smaller than the sum of its proper divisors (32579694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22007826 is a wasteful number, since it uses less digits than its factorization.

22007826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 22007826 is about 4691.2499400480. The cubic root of 22007826 is about 280.2371545202.

Adding to 22007826 its reverse (62870022), we get a palindrome (84877848).

The spelling of 22007826 in words is "twenty-two million, seven thousand, eight hundred twenty-six".