22424418 has 32 divisors (see below), whose sum is σ = 50310720. Its totient is φ = 7403040.

The previous prime is 22424383. The next prime is 22424429. The reversal of 22424418 is 81442422.

22424418 is a `hidden beast` number, since 2 + 242 + 4 + 418 = 666.

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 = 22424391 and 22424400.

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, 3838 + ... + 7718.

It is an arithmetic number, because the mean of its divisors is an integer number (1572210).

Almost surely, 2^22424418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22424418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25155360).

22424418 is an abundant number, since it is smaller than the sum of its proper divisors (27886302).

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

22424418 is a wasteful number, since it uses less digits than its factorization.

22424418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3999 (or 3993 counting only the distinct ones).

The product of its digits is 4096, while the sum is 27.

The square root of 22424418 is about 4735.4427459320. The cubic root of 22424418 is about 281.9943412174.

It can be divided in two parts, 224 and 24418, that added together give a palindrome (24642).

The spelling of 22424418 in words is "twenty-two million, four hundred twenty-four thousand, four hundred eighteen".