18006255 has 24 divisors (see below), whose sum is σ = 31505760. Its totient is φ = 9512640.

The previous prime is 18006227. The next prime is 18006259. The reversal of 18006255 is 55260081.

It is not a de Polignac number, because 18006255 - 2⁷ = 18006127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18006259) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3070 + ... + 6740.

It is an arithmetic number, because the mean of its divisors is an integer number (1312740).

Almost surely, 2^18006255 is an apocalyptic number.

18006255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18006255 is a deficient number, since it is larger than the sum of its proper divisors (13499505).

18006255 is a wasteful number, since it uses less digits than its factorization.

18006255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3791 (or 3788 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 18006255 is about 4243.3777819091. The cubic root of 18006255 is about 262.1044928264.

The spelling of 18006255 in words is "eighteen million, six thousand, two hundred fifty-five".