22204885 has 8 divisors (see below), whose sum is σ = 26694360. Its totient is φ = 17731584.

The previous prime is 22204883. The next prime is 22204891. The reversal of 22204885 is 58840222.

22204885 = T₃₈₄₆ + T₃₈₄₇ + T₃₈₄₈.

It can be written as a sum of positive squares in 4 ways, for example, as 3073009 + 19131876 = 1753^2 + 4374^2 .

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

It is a 6-Lehmer number, since φ(22204885) divides (22204885-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 22204885 - 2¹ = 22204883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22204883) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 780 + ... + 6709.

It is an arithmetic number, because the mean of its divisors is an integer number (3336795).

Almost surely, 2^22204885 is an apocalyptic number.

22204885 is the 3848-th centered triangular number.

It is an amenable number.

22204885 is a deficient number, since it is larger than the sum of its proper divisors (4489475).

22204885 is an equidigital number, since it uses as much as digits as its factorization.

22204885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8087.

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 22204885 is about 4712.2059589963. The cubic root of 22204885 is about 281.0710888474.

The spelling of 22204885 in words is "twenty-two million, two hundred four thousand, eight hundred eighty-five".