22320401 has 8 divisors (see below), whose sum is σ = 23197800. Its totient is φ = 21450240.

The previous prime is 22320391. The next prime is 22320433. The reversal of 22320401 is 10402322.

It can be written as a sum of positive squares in 4 ways, for example, as 11397376 + 10923025 = 3376^2 + 3305^2 .

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 22320401 - 2¹⁰ = 22319377 is a prime.

It is a super-3 number, since 3×22320401³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22320461) 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, 4961 + ... + 8321.

It is an arithmetic number, because the mean of its divisors is an integer number (2899725).

Almost surely, 2^22320401 is an apocalyptic number.

It is an amenable number.

22320401 is a deficient number, since it is larger than the sum of its proper divisors (877399).

22320401 is a wasteful number, since it uses less digits than its factorization.

22320401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3619.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 22320401 is about 4724.4471634256. The cubic root of 22320401 is about 281.5576494574.

Adding to 22320401 its reverse (10402322), we get a palindrome (32722723).

The spelling of 22320401 in words is "twenty-two million, three hundred twenty thousand, four hundred one".