20222424 has 48 divisors (see below), whose sum is σ = 56256720. Its totient is φ = 6557760.

The previous prime is 20222413. The next prime is 20222437. The reversal of 20222424 is 42422202.

20222424 is a `hidden beast` number, since 20 + 222 + 424 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20222397 and 20222406.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1132 + ... + 6459.

It is an arithmetic number, because the mean of its divisors is an integer number (1172015).

Almost surely, 2^20222424 is an apocalyptic number.

20222424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20222424 is an abundant number, since it is smaller than the sum of its proper divisors (36034296).

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

20222424 is a wasteful number, since it uses less digits than its factorization.

20222424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7640 (or 7633 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 20222424 is about 4496.9349561674. The cubic root of 20222424 is about 272.4443069978. Note that the first 3 decimals are identical.

Adding to 20222424 its reverse (42422202), we get a palindrome (62644626).

The spelling of 20222424 in words is "twenty million, two hundred twenty-two thousand, four hundred twenty-four".