23906161 has 4 divisors (see below), whose sum is σ = 25164400. Its totient is φ = 22647924.

The previous prime is 23906159. The next prime is 23906189. The reversal of 23906161 is 16160932.

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 23906161 - 2¹ = 23906159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23906101) 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, 629091 + ... + 629128.

It is an arithmetic number, because the mean of its divisors is an integer number (6291100).

Almost surely, 2^23906161 is an apocalyptic number.

It is an amenable number.

23906161 is a deficient number, since it is larger than the sum of its proper divisors (1258239).

23906161 is a wasteful number, since it uses less digits than its factorization.

23906161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258238.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 23906161 is about 4889.3927025756. The cubic root of 23906161 is about 288.0734806396.

The spelling of 23906161 in words is "twenty-three million, nine hundred six thousand, one hundred sixty-one".