18230712 has 32 divisors (see below), whose sum is σ = 45761280. Its totient is φ = 6052320.

The previous prime is 18230711. The next prime is 18230717. The reversal of 18230712 is 21703281.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18230711) 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, 5103 + ... + 7905.

It is an arithmetic number, because the mean of its divisors is an integer number (1430040).

Almost surely, 2^18230712 is an apocalyptic number.

18230712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18230712 is an abundant number, since it is smaller than the sum of its proper divisors (27530568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18230712 is a wasteful number, since it uses less digits than its factorization.

18230712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3083 (or 3079 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 18230712 is about 4269.7437862242. The cubic root of 18230712 is about 263.1890865540.

Adding to 18230712 its reverse (21703281), we get a palindrome (39933993).

The spelling of 18230712 in words is "eighteen million, two hundred thirty thousand, seven hundred twelve".