18423234 has 16 divisors (see below), whose sum is σ = 40940640. Its totient is φ = 6141060.

The previous prime is 18423211. The next prime is 18423241. The reversal of 18423234 is 43232481.

18423234 = T₁₆₂ + T₁₆₃ + ... + T₄₈₅.

18423234 is a `hidden beast` number, since 1 + 8 + 423 + 234 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 18423198 and 18423207.

It is an unprimeable number.

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, 170532 + ... + 170639.

It is an arithmetic number, because the mean of its divisors is an integer number (2558790).

Almost surely, 2^18423234 is an apocalyptic number.

18423234 is an abundant number, since it is smaller than the sum of its proper divisors (22517406).

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

18423234 is a wasteful number, since it uses less digits than its factorization.

18423234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341182 (or 341176 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 18423234 is about 4292.2294906028. The cubic root of 18423234 is about 264.1122972668.

The spelling of 18423234 in words is "eighteen million, four hundred twenty-three thousand, two hundred thirty-four".