23221422 has 96 divisors (see below), whose sum is σ = 62741952. Its totient is φ = 6054912.

The previous prime is 23221417. The next prime is 23221447. The reversal of 23221422 is 22412232.

23221422 is a `hidden beast` number, since 23 + 221 + 422 = 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 = 23221395 and 23221404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79108 + ... + 79400.

It is an arithmetic number, because the mean of its divisors is an integer number (653562).

Almost surely, 2^23221422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23221422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31370976).

23221422 is an abundant number, since it is smaller than the sum of its proper divisors (39520530).

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

23221422 is a wasteful number, since it uses less digits than its factorization.

23221422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 359 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 23221422 is about 4818.8610687589. The cubic root of 23221422 is about 285.2963860337.

Adding to 23221422 its reverse (22412232), we get a palindrome (45633654).

It can be divided in two parts, 23 and 221422, that added together give a triangular number (221445 = T₆₆₅).

The spelling of 23221422 in words is "twenty-three million, two hundred twenty-one thousand, four hundred twenty-two".