18230842 has 24 divisors (see below), whose sum is σ = 33488640. Its totient is φ = 7401240.

The previous prime is 18230837. The next prime is 18230843. The reversal of 18230842 is 24803281.

It is a self number, because there is not a number n which added to its sum of digits gives 18230842.

It is not an unprimeable number, because it can be changed into a prime (18230843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3034 + ... + 6757.

It is an arithmetic number, because the mean of its divisors is an integer number (1395360).

Almost surely, 2^18230842 is an apocalyptic number.

18230842 is a deficient number, since it is larger than the sum of its proper divisors (15257798).

18230842 is a wasteful number, since it uses less digits than its factorization.

18230842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9826 (or 9819 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 18230842 is about 4269.7590095929. The cubic root of 18230842 is about 263.1897121375.

It can be divided in two parts, 18 and 230842, that added together give a triangular number (230860 = T₆₇₉).

The spelling of 18230842 in words is "eighteen million, two hundred thirty thousand, eight hundred forty-two".