18232734 has 24 divisors (see below), whose sum is σ = 39488472. Its totient is φ = 5609760.

The previous prime is 18232733. The next prime is 18232759. The reversal of 18232734 is 43723281.

It is a super-2 number, since 2×18232734² = 664865178229512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18232733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7977 + ... + 10004.

It is an arithmetic number, because the mean of its divisors is an integer number (1645353).

Almost surely, 2^18232734 is an apocalyptic number.

18232734 is an abundant number, since it is smaller than the sum of its proper divisors (21255738).

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

18232734 is a wasteful number, since it uses less digits than its factorization.

18232734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18012 (or 17999 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 18232734 is about 4269.9805620166. The cubic root of 18232734 is about 263.1988164475.

The spelling of 18232734 in words is "eighteen million, two hundred thirty-two thousand, seven hundred thirty-four".