23421573 has 24 divisors (see below), whose sum is σ = 38807808. Its totient is φ = 13334112.

The previous prime is 23421569. The next prime is 23421577. The reversal of 23421573 is 37512432.

It is an interprime number because it is at equal distance from previous prime (23421569) and next prime (23421577).

It is not a de Polignac number, because 23421573 - 2² = 23421569 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23421577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22615 + ... + 23627.

It is an arithmetic number, because the mean of its divisors is an integer number (1616992).

Almost surely, 2^23421573 is an apocalyptic number.

It is an amenable number.

23421573 is a deficient number, since it is larger than the sum of its proper divisors (15386235).

23421573 is a wasteful number, since it uses less digits than its factorization.

23421573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393 (or 1390 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 23421573 is about 4839.5839697230. The cubic root of 23421573 is about 286.1137215445.

The spelling of 23421573 in words is "twenty-three million, four hundred twenty-one thousand, five hundred seventy-three".