22036861 has 16 divisors (see below), whose sum is σ = 27688320. Its totient is φ = 17038080.

The previous prime is 22036853. The next prime is 22036871. The reversal of 22036861 is 16863022.

It is a cyclic number.

It is not a de Polignac number, because 22036861 - 2³ = 22036853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22036831) 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 15 ways as a sum of consecutive naturals, for example, 9505 + ... + 11593.

It is an arithmetic number, because the mean of its divisors is an integer number (1730520).

Almost surely, 2^22036861 is an apocalyptic number.

It is an amenable number.

22036861 is a deficient number, since it is larger than the sum of its proper divisors (5651459).

22036861 is a wasteful number, since it uses less digits than its factorization.

22036861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 22036861 is about 4694.3435110780. The cubic root of 22036861 is about 280.3603396416.

Adding to 22036861 its reverse (16863022), we get a palindrome (38899883).

The spelling of 22036861 in words is "twenty-two million, thirty-six thousand, eight hundred sixty-one".