18672288 has 96 divisors (see below), whose sum is σ = 53524800. Its totient is φ = 5677056.

The previous prime is 18672281. The next prime is 18672319. The reversal of 18672288 is 88227681.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (18672281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52720 + ... + 53072.

It is an arithmetic number, because the mean of its divisors is an integer number (557550).

Almost surely, 2^18672288 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 18672288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26762400).

18672288 is an abundant number, since it is smaller than the sum of its proper divisors (34852512).

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

18672288 is a wasteful number, since it uses less digits than its factorization.

18672288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414 (or 406 counting only the distinct ones).

The product of its digits is 86016, while the sum is 42.

The square root of 18672288 is about 4321.1442928928. The cubic root of 18672288 is about 265.2971059574.

The spelling of 18672288 in words is "eighteen million, six hundred seventy-two thousand, two hundred eighty-eight".