22493723 has 8 divisors (see below), whose sum is σ = 26069760. Its totient is φ = 19008360.

The previous prime is 22493717. The next prime is 22493741. The reversal of 22493723 is 32739422.

It is a happy number.

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

It is not a de Polignac number, because 22493723 - 2⁸ = 22493467 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22493723.

It is not an unprimeable number, because it can be changed into a prime (22493753) 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, 22133 + ... + 23126.

It is an arithmetic number, because the mean of its divisors is an integer number (3258720).

Almost surely, 2^22493723 is an apocalyptic number.

22493723 is a deficient number, since it is larger than the sum of its proper divisors (3576037).

22493723 is an equidigital number, since it uses as much as digits as its factorization.

22493723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45337.

The product of its digits is 18144, while the sum is 32.

The square root of 22493723 is about 4742.7547902037. The cubic root of 22493723 is about 282.2845534086.

The spelling of 22493723 in words is "twenty-two million, four hundred ninety-three thousand, seven hundred twenty-three".