22242402 has 96 divisors (see below), whose sum is σ = 61082112. Its totient is φ = 5692032.

The previous prime is 22242401. The next prime is 22242419. The reversal of 22242402 is 20424222.

22242402 is a `hidden beast` number, since 22 + 242 + 402 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (22242401) 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 47 ways as a sum of consecutive naturals, for example, 60423 + ... + 60789.

It is an arithmetic number, because the mean of its divisors is an integer number (636272).

Almost surely, 2^22242402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22242402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30541056).

22242402 is an abundant number, since it is smaller than the sum of its proper divisors (38839710).

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

22242402 is a wasteful number, since it uses less digits than its factorization.

22242402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 429 counting only the distinct ones).

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

The square root of 22242402 is about 4716.1851108709. The cubic root of 22242402 is about 281.2292974391.

Adding to 22242402 its reverse (20424222), we get a palindrome (42666624).

It can be divided in two parts, 222 and 42402, that added together give a palindrome (42624).

The spelling of 22242402 in words is "twenty-two million, two hundred forty-two thousand, four hundred two".