22402422 has 24 divisors (see below), whose sum is σ = 55472976. Its totient is φ = 6400656.

The previous prime is 22402421. The next prime is 22402423. The reversal of 22402422 is 22420422.

22402422 is a `hidden beast` number, since 2 + 240 + 2 + 422 = 666.

It is an interprime number because it is at equal distance from previous prime (22402421) and next prime (22402423).

It is a super-2 number, since 2×22402422² = 1003737022932168, which contains 22 as substring.

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 = 22402395 and 22402404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22402421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88773 + ... + 89024.

It is an arithmetic number, because the mean of its divisors is an integer number (2311374).

Almost surely, 2^22402422 is an apocalyptic number.

22402422 is an abundant number, since it is smaller than the sum of its proper divisors (33070554).

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

22402422 is a wasteful number, since it uses less digits than its factorization.

22402422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177812 (or 177809 counting only the distinct ones).

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

The square root of 22402422 is about 4733.1196900142. The cubic root of 22402422 is about 281.9021087721.

Adding to 22402422 its reverse (22420422), we get a palindrome (44822844).

The spelling of 22402422 in words is "twenty-two million, four hundred two thousand, four hundred twenty-two".