18234572 has 24 divisors (see below), whose sum is σ = 33116160. Its totient is φ = 8776080.

The previous prime is 18234571. The next prime is 18234589. The reversal of 18234572 is 27543281.

It is not an unprimeable number, because it can be changed into a prime (18234571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37829 + ... + 38307.

It is an arithmetic number, because the mean of its divisors is an integer number (1379840).

Almost surely, 2^18234572 is an apocalyptic number.

It is an amenable number.

18234572 is a deficient number, since it is larger than the sum of its proper divisors (14881588).

18234572 is a wasteful number, since it uses less digits than its factorization.

18234572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 819 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 18234572 is about 4270.1957800551. The cubic root of 18234572 is about 263.2076603062.

The spelling of 18234572 in words is "eighteen million, two hundred thirty-four thousand, five hundred seventy-two".