18712323 has 32 divisors (see below), whose sum is σ = 31915520. Its totient is φ = 10614240.

The previous prime is 18712303. The next prime is 18712327. The reversal of 18712323 is 32321781.

It is not a de Polignac number, because 18712323 - 2⁶ = 18712259 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (18712327) 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 31 ways as a sum of consecutive naturals, for example, 33936 + ... + 34482.

It is an arithmetic number, because the mean of its divisors is an integer number (997360).

Almost surely, 2^18712323 is an apocalyptic number.

18712323 is a deficient number, since it is larger than the sum of its proper divisors (13203197).

18712323 is a wasteful number, since it uses less digits than its factorization.

18712323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 738 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 18712323 is about 4325.7742659552. The cubic root of 18712323 is about 265.4865772524.

The spelling of 18712323 in words is "eighteen million, seven hundred twelve thousand, three hundred twenty-three".