18288055 has 8 divisors (see below), whose sum is σ = 21971952. Its totient is φ = 14612928.

The previous prime is 18288043. The next prime is 18288071. The reversal of 18288055 is 55088281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18288055 - 2⁹ = 18287543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3987 + ... + 7243.

It is an arithmetic number, because the mean of its divisors is an integer number (2746494).

Almost surely, 2^18288055 is an apocalyptic number.

18288055 is a deficient number, since it is larger than the sum of its proper divisors (3683897).

18288055 is a wasteful number, since it uses less digits than its factorization.

18288055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4385.

The product of its (nonzero) digits is 25600, while the sum is 37.

The square root of 18288055 is about 4276.4535540562. The cubic root of 18288055 is about 263.4647432926.

The spelling of 18288055 in words is "eighteen million, two hundred eighty-eight thousand, fifty-five".