18027250 has 16 divisors (see below), whose sum is σ = 33747480. Its totient is φ = 7210800.

The previous prime is 18027227. The next prime is 18027271. The reversal of 18027250 is 5272081.

It can be written as a sum of positive squares in 4 ways, for example, as 6145441 + 11881809 = 2479^2 + 3447^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 35805 + ... + 36304.

Almost surely, 2^18027250 is an apocalyptic number.

18027250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18027250 is a deficient number, since it is larger than the sum of its proper divisors (15720230).

18027250 is an equidigital number, since it uses as much as digits as its factorization.

18027250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72126 (or 72116 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 18027250 is about 4245.8509158942. The cubic root of 18027250 is about 262.2063231154.

The spelling of 18027250 in words is "eighteen million, twenty-seven thousand, two hundred fifty".