23772117 has 4 divisors (see below), whose sum is σ = 31696160. Its totient is φ = 15848076.

The previous prime is 23772109. The next prime is 23772131. The reversal of 23772117 is 71127732.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23772117 - 2³ = 23772109 is a prime.

It is a super-2 number, since 2×23772117² = 1130227093323378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23772517) 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, 3962017 + ... + 3962022.

It is an arithmetic number, because the mean of its divisors is an integer number (7924040).

Almost surely, 2^23772117 is an apocalyptic number.

It is an amenable number.

23772117 is a deficient number, since it is larger than the sum of its proper divisors (7924043).

23772117 is an equidigital number, since it uses as much as digits as its factorization.

23772117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7924042.

The product of its digits is 4116, while the sum is 30.

The square root of 23772117 is about 4875.6658006881. The cubic root of 23772117 is about 287.5340531813.

Adding to 23772117 its reverse (71127732), we get a palindrome (94899849).

The spelling of 23772117 in words is "twenty-three million, seven hundred seventy-two thousand, one hundred seventeen".