11505923 has 16 divisors (see below), whose sum is σ = 14315616. Its totient is φ = 9085440.

The previous prime is 11505919. The next prime is 11505943. The reversal of 11505923 is 32950511.

It is not a de Polignac number, because 11505923 - 2² = 11505919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11505892 and 11505901.

It is not an unprimeable number, because it can be changed into a prime (11505913) 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 15 ways as a sum of consecutive naturals, for example, 65 + ... + 4797.

It is an arithmetic number, because the mean of its divisors is an integer number (894726).

Almost surely, 2^11505923 is an apocalyptic number.

11505923 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11505923 is a deficient number, since it is larger than the sum of its proper divisors (2809693).

11505923 is a wasteful number, since it uses less digits than its factorization.

11505923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4774.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 11505923 is about 3392.0381778512. The cubic root of 11505923 is about 225.7566166286.

The spelling of 11505923 in words is "eleven million, five hundred five thousand, nine hundred twenty-three".