23727157 has 4 divisors (see below), whose sum is σ = 23741676. Its totient is φ = 23712640.

The previous prime is 23727149. The next prime is 23727163. The reversal of 23727157 is 75172732.

It is a happy number.

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 4726276 + 19000881 = 2174^2 + 4359^2 .

It is a cyclic number.

It is not a de Polignac number, because 23727157 - 2³ = 23727149 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 (23727107) 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 3 ways as a sum of consecutive naturals, for example, 4444 + ... + 8197.

It is an arithmetic number, because the mean of its divisors is an integer number (5935419).

Almost surely, 2^23727157 is an apocalyptic number.

It is an amenable number.

23727157 is a deficient number, since it is larger than the sum of its proper divisors (14519).

23727157 is a wasteful number, since it uses less digits than its factorization.

23727157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14518.

The product of its digits is 20580, while the sum is 34.

The square root of 23727157 is about 4871.0529662487. The cubic root of 23727157 is about 287.3526685572.

Adding to 23727157 its reverse (75172732), we get a palindrome (98899889).

The spelling of 23727157 in words is "twenty-three million, seven hundred twenty-seven thousand, one hundred fifty-seven".