23538247 has 4 divisors (see below), whose sum is σ = 23625376. Its totient is φ = 23451120.

The previous prime is 23538241. The next prime is 23538289. The reversal of 23538247 is 74283532.

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

It is a cyclic number.

It is not a de Polignac number, because 23538247 - 2²³ = 15149639 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 (23538241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43158 + ... + 43699.

It is an arithmetic number, because the mean of its divisors is an integer number (5906344).

Almost surely, 2^23538247 is an apocalyptic number.

23538247 is a deficient number, since it is larger than the sum of its proper divisors (87129).

23538247 is an equidigital number, since it uses as much as digits as its factorization.

23538247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87128.

The product of its digits is 40320, while the sum is 34.

The square root of 23538247 is about 4851.6231304585. The cubic root of 23538247 is about 286.5880243685.

The spelling of 23538247 in words is "twenty-three million, five hundred thirty-eight thousand, two hundred forty-seven".