22004723 has 8 divisors (see below), whose sum is σ = 23734368. Its totient is φ = 20280384.

The previous prime is 22004701. The next prime is 22004747. The reversal of 22004723 is 32740022.

It is a happy number.

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 22004723 - 2²⁴ = 5227507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22004695 and 22004704.

It is not an unprimeable number, because it can be changed into a prime (22004923) 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, 13490 + ... + 15032.

It is an arithmetic number, because the mean of its divisors is an integer number (2966796).

Almost surely, 2^22004723 is an apocalyptic number.

22004723 is a deficient number, since it is larger than the sum of its proper divisors (1729645).

22004723 is a wasteful number, since it uses less digits than its factorization.

22004723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 22004723 is about 4690.9192062964. The cubic root of 22004723 is about 280.2239831941.

Adding to 22004723 its reverse (32740022), we get a palindrome (54744745).

The spelling of 22004723 in words is "twenty-two million, four thousand, seven hundred twenty-three".