18287343 has 8 divisors (see below), whose sum is σ = 27092400. Its totient is φ = 12191544.

The previous prime is 18287333. The next prime is 18287389. The reversal of 18287343 is 34378281.

It is not a de Polignac number, because 18287343 - 2⁴ = 18287327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18287298 and 18287307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18287333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338628 + ... + 338681.

It is an arithmetic number, because the mean of its divisors is an integer number (3386550).

Almost surely, 2^18287343 is an apocalyptic number.

18287343 is a deficient number, since it is larger than the sum of its proper divisors (8805057).

18287343 is an equidigital number, since it uses as much as digits as its factorization.

18287343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677318 (or 677312 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 18287343 is about 4276.3703066970. The cubic root of 18287343 is about 263.4613241330.

The spelling of 18287343 in words is "eighteen million, two hundred eighty-seven thousand, three hundred forty-three".