18233242 has 16 divisors (see below), whose sum is σ = 27993600. Its totient is φ = 8904160.

The previous prime is 18233221. The next prime is 18233249. The reversal of 18233242 is 24233281.

It is a super-2 number, since 2×18233242² = 664902227661128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18233249) 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 7 ways as a sum of consecutive naturals, for example, 22134 + ... + 22942.

It is an arithmetic number, because the mean of its divisors is an integer number (1749600).

Almost surely, 2^18233242 is an apocalyptic number.

18233242 is a deficient number, since it is larger than the sum of its proper divisors (9760358).

18233242 is a wasteful number, since it uses less digits than its factorization.

18233242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061.

The product of its digits is 2304, while the sum is 25.

The square root of 18233242 is about 4270.0400466506. The cubic root of 18233242 is about 263.2012608378.

The spelling of 18233242 in words is "eighteen million, two hundred thirty-three thousand, two hundred forty-two".