18230705 has 16 divisors (see below), whose sum is σ = 23025600. Its totient is φ = 13836480.

The previous prime is 18230687. The next prime is 18230711. The reversal of 18230705 is 50703281.

It is not a de Polignac number, because 18230705 - 2¹⁰ = 18229681 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7490 + ... + 9620.

It is an arithmetic number, because the mean of its divisors is an integer number (1439100).

Almost surely, 2^18230705 is an apocalyptic number.

It is an amenable number.

18230705 is a deficient number, since it is larger than the sum of its proper divisors (4794895).

18230705 is a wasteful number, since it uses less digits than its factorization.

18230705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 18230705 is about 4269.7429665028. The cubic root of 18230705 is about 263.1890528686.

Adding to 18230705 its reverse (50703281), we get a palindrome (68933986).

The spelling of 18230705 in words is "eighteen million, two hundred thirty thousand, seven hundred five".