22404037 has 8 divisors (see below), whose sum is σ = 23268600. Its totient is φ = 21545664.

The previous prime is 22403987. The next prime is 22404061. The reversal of 22404037 is 73040422.

It can be written as a sum of positive squares in 4 ways, for example, as 1846881 + 20557156 = 1359^2 + 4534^2 .

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-22404037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22403999 and 22404017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22401037) 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, 6639 + ... + 9427.

It is an arithmetic number, because the mean of its divisors is an integer number (2908575).

Almost surely, 2^22404037 is an apocalyptic number.

It is an amenable number.

22404037 is a deficient number, since it is larger than the sum of its proper divisors (864563).

22404037 is a wasteful number, since it uses less digits than its factorization.

22404037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 22404037 is about 4733.2902932315. The cubic root of 22404037 is about 281.9088827564.

Adding to 22404037 its reverse (73040422), we get a palindrome (95444459).

The spelling of 22404037 in words is "twenty-two million, four hundred four thousand, thirty-seven".