22404513 has 8 divisors (see below), whose sum is σ = 30056608. Its totient is φ = 14844384.

The previous prime is 22404497. The next prime is 22404523. The reversal of 22404513 is 31540422.

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

It is not a de Polignac number, because 22404513 - 2⁴ = 22404497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22404513.

It is not an unprimeable number, because it can be changed into a prime (22404523) 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, 22420 + ... + 23397.

It is an arithmetic number, because the mean of its divisors is an integer number (3757076).

Almost surely, 2^22404513 is an apocalyptic number.

It is an amenable number.

22404513 is a deficient number, since it is larger than the sum of its proper divisors (7652095).

22404513 is a wasteful number, since it uses less digits than its factorization.

22404513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45983.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 22404513 is about 4733.3405751118. The cubic root of 22404513 is about 281.9108792371.

Adding to 22404513 its reverse (31540422), we get a palindrome (53944935).

The spelling of 22404513 in words is "twenty-two million, four hundred four thousand, five hundred thirteen".