22010404 has 12 divisors (see below), whose sum is σ = 41481244. Its totient is φ = 10158624.

The previous prime is 22010389. The next prime is 22010407. The reversal of 22010404 is 40401022.

It can be written as a sum of positive squares in 2 ways, for example, as 8702500 + 13307904 = 2950^2 + 3648^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (22010407) 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 3 ways as a sum of consecutive naturals, for example, 211587 + ... + 211690.

Almost surely, 2^22010404 is an apocalyptic number.

It is an amenable number.

22010404 is a deficient number, since it is larger than the sum of its proper divisors (19470840).

22010404 is a wasteful number, since it uses less digits than its factorization.

22010404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423294 (or 423292 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 22010404 is about 4691.5246988586. The cubic root of 22010404 is about 280.2480964336.

Adding to 22010404 its reverse (40401022), we get a palindrome (62411426).

The spelling of 22010404 in words is "twenty-two million, ten thousand, four hundred four".