23781953 has 8 divisors (see below), whose sum is σ = 26156928. Its totient is φ = 21484944.

The previous prime is 23781949. The next prime is 23781971. The reversal of 23781953 is 35918732.

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

It is not a de Polignac number, because 23781953 - 2² = 23781949 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23781913) 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 7 ways as a sum of consecutive naturals, for example, 18851 + ... + 20072.

It is an arithmetic number, because the mean of its divisors is an integer number (3269616).

Almost surely, 2^23781953 is an apocalyptic number.

It is an amenable number.

23781953 is a deficient number, since it is larger than the sum of its proper divisors (2374975).

23781953 is a wasteful number, since it uses less digits than its factorization.

23781953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38983.

The product of its digits is 45360, while the sum is 38.

The square root of 23781953 is about 4876.6743791235. The cubic root of 23781953 is about 287.5737046067.

The spelling of 23781953 in words is "twenty-three million, seven hundred eighty-one thousand, nine hundred fifty-three".