18234782 has 4 divisors (see below), whose sum is σ = 27352176. Its totient is φ = 9117390.

The previous prime is 18234781. The next prime is 18234793. The reversal of 18234782 is 28743281.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18234781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4558694 + ... + 4558697.

It is an arithmetic number, because the mean of its divisors is an integer number (6838044).

Almost surely, 2^18234782 is an apocalyptic number.

18234782 is a deficient number, since it is larger than the sum of its proper divisors (9117394).

18234782 is an equidigital number, since it uses as much as digits as its factorization.

18234782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9117393.

The product of its digits is 21504, while the sum is 35.

The square root of 18234782 is about 4270.2203690208. The cubic root of 18234782 is about 263.2086707201.

The spelling of 18234782 in words is "eighteen million, two hundred thirty-four thousand, seven hundred eighty-two".