23785257 has 8 divisors (see below), whose sum is σ = 31994784. Its totient is φ = 15716288.

The previous prime is 23785253. The next prime is 23785271. The reversal of 23785257 is 75258732.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23785257 - 2² = 23785253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23785253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34743 + ... + 35420.

It is an arithmetic number, because the mean of its divisors is an integer number (3999348).

Almost surely, 2^23785257 is an apocalyptic number.

It is an amenable number.

23785257 is a deficient number, since it is larger than the sum of its proper divisors (8209527).

23785257 is a wasteful number, since it uses less digits than its factorization.

23785257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70279.

The product of its digits is 117600, while the sum is 39.

The square root of 23785257 is about 4877.0131228038. The cubic root of 23785257 is about 287.5870214205.

It can be divided in two parts, 23785 and 257, that added together give a palindrome (24042).

The spelling of 23785257 in words is "twenty-three million, seven hundred eighty-five thousand, two hundred fifty-seven".