18234472 has 16 divisors (see below), whose sum is σ = 36201060. Its totient is φ = 8580864.

The previous prime is 18234467. The next prime is 18234473. The reversal of 18234472 is 27443281.

It can be written as a sum of positive squares in 2 ways, for example, as 13883076 + 4351396 = 3726^2 + 2086^2 .

It is not an unprimeable number, because it can be changed into a prime (18234473) 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 3 ways as a sum of consecutive naturals, for example, 66903 + ... + 67174.

Almost surely, 2^18234472 is an apocalyptic number.

It is an amenable number.

18234472 is a deficient number, since it is larger than the sum of its proper divisors (17966588).

18234472 is a wasteful number, since it uses less digits than its factorization.

18234472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134100 (or 134096 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 18234472 is about 4270.1840709740. The cubic root of 18234472 is about 263.2071791540.

The spelling of 18234472 in words is "eighteen million, two hundred thirty-four thousand, four hundred seventy-two".