22818436 has 6 divisors (see below), whose sum is σ = 39932270. Its totient is φ = 11409216.

The previous prime is 22818431. The next prime is 22818473. The reversal of 22818436 is 63481822.

It can be written as a sum of positive squares in only one way, i.e., 22752900 + 65536 = 4770^2 + 256^2 .

It is not an unprimeable number, because it can be changed into a prime (22818431) 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 as a sum of consecutive naturals, namely, 2852301 + ... + 2852308.

Almost surely, 2^22818436 is an apocalyptic number.

It is an amenable number.

22818436 is a deficient number, since it is larger than the sum of its proper divisors (17113834).

22818436 is a wasteful number, since it uses less digits than its factorization.

22818436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5704613 (or 5704611 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 22818436 is about 4776.8646620979. The cubic root of 22818436 is about 283.6363957499.

The spelling of 22818436 in words is "twenty-two million, eight hundred eighteen thousand, four hundred thirty-six".