22404313 has 4 divisors (see below), whose sum is σ = 22419940. Its totient is φ = 22388688.

The previous prime is 22404307. The next prime is 22404329. The reversal of 22404313 is 31340422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31340422 = 2 ⋅15670211.

It can be written as a sum of positive squares in 2 ways, for example, as 2082249 + 20322064 = 1443^2 + 4508^2 .

It is a cyclic number.

It is not a de Polignac number, because 22404313 - 2⁵ = 22404281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22404913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5418 + ... + 8611.

It is an arithmetic number, because the mean of its divisors is an integer number (5604985).

Almost surely, 2^22404313 is an apocalyptic number.

It is an amenable number.

22404313 is a deficient number, since it is larger than the sum of its proper divisors (15627).

22404313 is a wasteful number, since it uses less digits than its factorization.

22404313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15626.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 22404313 is about 4733.3194483364. The cubic root of 22404313 is about 281.9100403831.

Adding to 22404313 its reverse (31340422), we get a palindrome (53744735).

The spelling of 22404313 in words is "twenty-two million, four hundred four thousand, three hundred thirteen".