23156005 has 8 divisors (see below), whose sum is σ = 27899424. Its totient is φ = 18450000.

The previous prime is 23155999. The next prime is 23156017. The reversal of 23156005 is 50065132.

It is a happy number.

23156005 is nontrivially palindromic in base 4.

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

It is not a de Polignac number, because 23156005 - 2³ = 23155997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 7971 + ... + 10480.

It is an arithmetic number, because the mean of its divisors is an integer number (3487428).

Almost surely, 2^23156005 is an apocalyptic number.

It is an amenable number.

23156005 is a deficient number, since it is larger than the sum of its proper divisors (4743419).

23156005 is a wasteful number, since it uses less digits than its factorization.

23156005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18707.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 23156005 is about 4812.0686819704. The cubic root of 23156005 is about 285.0282315319.

The spelling of 23156005 in words is "twenty-three million, one hundred fifty-six thousand, five".