23573493 has 6 divisors (see below), whose sum is σ = 34050614. Its totient is φ = 15715656.

The previous prime is 23573467. The next prime is 23573513. The reversal of 23573493 is 39437532.

It can be written as a sum of positive squares in only one way, i.e., 22496049 + 1077444 = 4743^2 + 1038^2 .

It is not a de Polignac number, because 23573493 - 2⁹ = 23572981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23573093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1309630 + ... + 1309647.

Almost surely, 2^23573493 is an apocalyptic number.

It is an amenable number.

23573493 is a deficient number, since it is larger than the sum of its proper divisors (10477121).

23573493 is a wasteful number, since it uses less digits than its factorization.

23573493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619283 (or 2619280 counting only the distinct ones).

The product of its digits is 68040, while the sum is 36.

The square root of 23573493 is about 4855.2541643049. The cubic root of 23573493 is about 286.7309979713.

The spelling of 23573493 in words is "twenty-three million, five hundred seventy-three thousand, four hundred ninety-three".