18263234 has 16 divisors (see below), whose sum is σ = 30118176. Its totient is φ = 8236800.

The previous prime is 18263233. The next prime is 18263249. The reversal of 18263234 is 43236281.

It is a super-2 number, since 2×18263234² = 667091432277512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18263197 and 18263206.

It is not an unprimeable number, because it can be changed into a prime (18263233) 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 7 ways as a sum of consecutive naturals, for example, 287 + ... + 6050.

It is an arithmetic number, because the mean of its divisors is an integer number (1882386).

Almost surely, 2^18263234 is an apocalyptic number.

18263234 is a deficient number, since it is larger than the sum of its proper divisors (11854942).

18263234 is a wasteful number, since it uses less digits than its factorization.

18263234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6481.

The product of its digits is 6912, while the sum is 29.

The square root of 18263234 is about 4273.5505145020. The cubic root of 18263234 is about 263.3454957084.

The spelling of 18263234 in words is "eighteen million, two hundred sixty-three thousand, two hundred thirty-four".