18032115 has 16 divisors (see below), whose sum is σ = 30106368. Its totient is φ = 9198816.

The previous prime is 18032101. The next prime is 18032117. The reversal of 18032115 is 51123081.

It is not a de Polignac number, because 18032115 - 2⁹ = 18031603 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18032091 and 18032100.

It is not an unprimeable number, because it can be changed into a prime (18032117) 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 15 ways as a sum of consecutive naturals, for example, 25789 + ... + 26478.

It is an arithmetic number, because the mean of its divisors is an integer number (1881648).

Almost surely, 2^18032115 is an apocalyptic number.

18032115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18032115 is a deficient number, since it is larger than the sum of its proper divisors (12074253).

18032115 is a wasteful number, since it uses less digits than its factorization.

18032115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52298.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 18032115 is about 4246.4237894963. The cubic root of 18032115 is about 262.2299081331.

Adding to 18032115 its reverse (51123081), we get a palindrome (69155196).

The spelling of 18032115 in words is "eighteen million, thirty-two thousand, one hundred fifteen".