22235418 has 32 divisors (see below), whose sum is σ = 50469120. Its totient is φ = 7253280.

The previous prime is 22235417. The next prime is 22235441. The reversal of 22235418 is 81453222.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 22235391 and 22235400.

It is not an unprimeable number, because it can be changed into a prime (22235417) 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, 1843 + ... + 6918.

It is an arithmetic number, because the mean of its divisors is an integer number (1577160).

Almost surely, 2^22235418 is an apocalyptic number.

22235418 is an abundant number, since it is smaller than the sum of its proper divisors (28233702).

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

22235418 is a wasteful number, since it uses less digits than its factorization.

22235418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8819 (or 8813 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 22235418 is about 4715.4446237868. Note that the first 3 decimals coincide. The cubic root of 22235418 is about 281.1998595061.

The spelling of 22235418 in words is "twenty-two million, two hundred thirty-five thousand, four hundred eighteen".