18028522 has 8 divisors (see below), whose sum is σ = 27194400. Its totient is φ = 8963724.

The previous prime is 18028519. The next prime is 18028523. The reversal of 18028522 is 22582081.

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

It is not an unprimeable number, because it can be changed into a prime (18028523) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 24822 + ... + 25537.

It is an arithmetic number, because the mean of its divisors is an integer number (3399300).

Almost surely, 2^18028522 is an apocalyptic number.

18028522 is a deficient number, since it is larger than the sum of its proper divisors (9165878).

18028522 is a wasteful number, since it uses less digits than its factorization.

18028522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50540.

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 18028522 is about 4246.0007065473. Note that the first 3 decimals coincide. The cubic root of 18028522 is about 262.2124900497.

The spelling of 18028522 in words is "eighteen million, twenty-eight thousand, five hundred twenty-two".