23155906 has 8 divisors (see below), whose sum is σ = 34815744. Its totient is φ = 11550660.

The previous prime is 23155903. The next prime is 23155919. The reversal of 23155906 is 60955132.

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

It is not an unprimeable number, because it can be changed into a prime (23155903) 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, 12570 + ... + 14293.

It is an arithmetic number, because the mean of its divisors is an integer number (4351968).

Almost surely, 2^23155906 is an apocalyptic number.

23155906 is a deficient number, since it is larger than the sum of its proper divisors (11659838).

23155906 is a wasteful number, since it uses less digits than its factorization.

23155906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27296.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 23155906 is about 4812.0583953231. The cubic root of 23155906 is about 285.0278253329.

The spelling of 23155906 in words is "twenty-three million, one hundred fifty-five thousand, nine hundred six".