22418406 has 24 divisors (see below), whose sum is σ = 48933144. Its totient is φ = 7417440.

The previous prime is 22418387. The next prime is 22418453. The reversal of 22418406 is 60481422.

It is a super-3 number, since 3×22418406³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22418406.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2080 + ... + 7011.

It is an arithmetic number, because the mean of its divisors is an integer number (2038881).

Almost surely, 2^22418406 is an apocalyptic number.

22418406 is an abundant number, since it is smaller than the sum of its proper divisors (26514738).

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

22418406 is a wasteful number, since it uses less digits than its factorization.

22418406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9236 (or 9233 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 22418406 is about 4734.8079158504. The cubic root of 22418406 is about 281.9691380139.

Adding to 22418406 its reverse (60481422), we get a palindrome (82899828).

The spelling of 22418406 in words is "twenty-two million, four hundred eighteen thousand, four hundred six".