23712445 has 4 divisors (see below), whose sum is σ = 28454940. Its totient is φ = 18969952.

The previous prime is 23712443. The next prime is 23712463. The reversal of 23712445 is 54421732.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12809241 + 10903204 = 3579^2 + 3302^2 .

It is a cyclic number.

It is not a de Polignac number, because 23712445 - 2¹ = 23712443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23712443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2371240 + ... + 2371249.

It is an arithmetic number, because the mean of its divisors is an integer number (7113735).

Almost surely, 2^23712445 is an apocalyptic number.

It is an amenable number.

23712445 is a deficient number, since it is larger than the sum of its proper divisors (4742495).

23712445 is an equidigital number, since it uses as much as digits as its factorization.

23712445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742494.

The product of its digits is 6720, while the sum is 28.

The square root of 23712445 is about 4869.5425863216. The cubic root of 23712445 is about 287.2932653662.

It can be divided in two parts, 237124 and 45, that added together give a square (237169 = 487²).

The spelling of 23712445 in words is "twenty-three million, seven hundred twelve thousand, four hundred forty-five".