18032416 has 24 divisors (see below), whose sum is σ = 35852544. Its totient is φ = 8927040.

The previous prime is 18032411. The next prime is 18032419. The reversal of 18032416 is 61423081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18032411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561 + ... + 6031.

It is an arithmetic number, because the mean of its divisors is an integer number (1493856).

Almost surely, 2^18032416 is an apocalyptic number.

18032416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18032416 is a deficient number, since it is larger than the sum of its proper divisors (17820128).

18032416 is a wasteful number, since it uses less digits than its factorization.

18032416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5584 (or 5576 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 18032416 is about 4246.4592309358. The cubic root of 18032416 is about 262.2313672106.

Adding to 18032416 its reverse (61423081), we get a palindrome (79455497).

The spelling of 18032416 in words is "eighteen million, thirty-two thousand, four hundred sixteen".