23021622 has 48 divisors (see below), whose sum is σ = 55189680. Its totient is φ = 6889536.

The previous prime is 23021567. The next prime is 23021639. The reversal of 23021622 is 22612032.

23021622 is a `hidden beast` number, since 23 + 0 + 21 + 622 = 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 = 23021595 and 23021604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7329 + ... + 9987.

It is an arithmetic number, because the mean of its divisors is an integer number (1149785).

Almost surely, 2^23021622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23021622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27594840).

23021622 is an abundant number, since it is smaller than the sum of its proper divisors (32168058).

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

23021622 is a wasteful number, since it uses less digits than its factorization.

23021622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2717 (or 2714 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 23021622 is about 4798.0852430944. The cubic root of 23021622 is about 284.4757861492.

Adding to 23021622 its reverse (22612032), we get a palindrome (45633654).

The spelling of 23021622 in words is "twenty-three million, twenty-one thousand, six hundred twenty-two".