22320641 has 8 divisors (see below), whose sum is σ = 25537920. Its totient is φ = 19110528.

The previous prime is 22320637. The next prime is 22320653. The reversal of 22320641 is 14602322.

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

It is a cyclic number.

It is not a de Polignac number, because 22320641 - 2² = 22320637 is a prime.

It is a super-3 number, since 3×22320641³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22320601) 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, 10940 + ... + 12818.

It is an arithmetic number, because the mean of its divisors is an integer number (3192240).

Almost surely, 2^22320641 is an apocalyptic number.

It is an amenable number.

22320641 is a deficient number, since it is larger than the sum of its proper divisors (3217279).

22320641 is a wasteful number, since it uses less digits than its factorization.

22320641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3583.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 22320641 is about 4724.4725631545. The cubic root of 22320641 is about 281.5586586029.

Adding to 22320641 its reverse (14602322), we get a palindrome (36922963).

The spelling of 22320641 in words is "twenty-two million, three hundred twenty thousand, six hundred forty-one".