18432568 has 64 divisors (see below), whose sum is σ = 44997120. Its totient is φ = 6864000.

The previous prime is 18432563. The next prime is 18432581. The reversal of 18432568 is 86523481.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18432563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13518 + ... + 14818.

It is an arithmetic number, because the mean of its divisors is an integer number (703080).

Almost surely, 2^18432568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18432568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22498560).

18432568 is an abundant number, since it is smaller than the sum of its proper divisors (26564552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18432568 is a wasteful number, since it uses less digits than its factorization.

18432568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348 (or 1344 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 18432568 is about 4293.3166666343. The cubic root of 18432568 is about 264.1568932730.

The spelling of 18432568 in words is "eighteen million, four hundred thirty-two thousand, five hundred sixty-eight".