22418242 has 32 divisors (see below), whose sum is σ = 42249600. Its totient is φ = 8666880.

The previous prime is 22418237. The next prime is 22418273. The reversal of 22418242 is 24281422.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22458 + ... + 23434.

It is an arithmetic number, because the mean of its divisors is an integer number (1320300).

Almost surely, 2^22418242 is an apocalyptic number.

22418242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22418242 is a deficient number, since it is larger than the sum of its proper divisors (19831358).

22418242 is a wasteful number, since it uses less digits than its factorization.

22418242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146.

The product of its digits is 2048, while the sum is 25.

The square root of 22418242 is about 4734.7905972704. The cubic root of 22418242 is about 281.9684504382.

Adding to 22418242 its reverse (24281422), we get a palindrome (46699664).

The spelling of 22418242 in words is "twenty-two million, four hundred eighteen thousand, two hundred forty-two".