22621273 has 8 divisors (see below), whose sum is σ = 23090760. Its totient is φ = 22156800.

The previous prime is 22621253. The next prime is 22621279. The reversal of 22621273 is 37212622.

It can be written as a sum of positive squares in 4 ways, for example, as 12616704 + 10004569 = 3552^2 + 3163^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22621273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22621279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8643 + ... + 10951.

It is an arithmetic number, because the mean of its divisors is an integer number (2886345).

Almost surely, 2^22621273 is an apocalyptic number.

It is an amenable number.

22621273 is a deficient number, since it is larger than the sum of its proper divisors (469487).

22621273 is a wasteful number, since it uses less digits than its factorization.

22621273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507.

The product of its digits is 2016, while the sum is 25.

The square root of 22621273 is about 4756.1826079325. The cubic root of 22621273 is about 282.8171101657.

Adding to 22621273 its reverse (37212622), we get a palindrome (59833895).

The spelling of 22621273 in words is "twenty-two million, six hundred twenty-one thousand, two hundred seventy-three".