18028395 has 96 divisors (see below), whose sum is σ = 40195584. Its totient is φ = 7318080.

The previous prime is 18028379. The next prime is 18028411. The reversal of 18028395 is 59382081.

It is an interprime number because it is at equal distance from previous prime (18028379) and next prime (18028411).

It is not a de Polignac number, because 18028395 - 2⁴ = 18028379 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 419244 + ... + 419286.

It is an arithmetic number, because the mean of its divisors is an integer number (418704).

Almost surely, 2^18028395 is an apocalyptic number.

18028395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18028395 is an abundant number, since it is smaller than the sum of its proper divisors (22167189).

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

18028395 is a wasteful number, since it uses less digits than its factorization.

18028395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 18028395 is about 4245.9857512714. The cubic root of 18028395 is about 262.2118743390.

The spelling of 18028395 in words is "eighteen million, twenty-eight thousand, three hundred ninety-five".