2622321 has 32 divisors (see below), whose sum is σ = 4336640. Its totient is φ = 1555200.

The previous prime is 2622311. The next prime is 2622337. The reversal of 2622321 is 1232262.

It is not a de Polignac number, because 2622321 - 2¹¹ = 2620273 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a Duffinian number.

Its product of digits (288) is a multiple of the sum of its prime divisors (288).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2622294 and 2622303.

It is not an unprimeable number, because it can be changed into a prime (2622311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10761 + ... + 11001.

It is an arithmetic number, because the mean of its divisors is an integer number (135520).

2^2622321 is an apocalyptic number.

It is an amenable number.

2622321 is a deficient number, since it is larger than the sum of its proper divisors (1714319).

2622321 is a wasteful number, since it uses less digits than its factorization.

2622321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 288 counting only the distinct ones).

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

The square root of 2622321 is about 1619.3582062039. The cubic root of 2622321 is about 137.8992648591.

Adding to 2622321 its reverse (1232262), we get a palindrome (3854583).

It can be divided in two parts, 26223 and 21, that added together give a square (26244 = 162²).

The spelling of 2622321 in words is "two million, six hundred twenty-two thousand, three hundred twenty-one".