18090048 has 28 divisors (see below), whose sum is σ = 47863760. Its totient is φ = 6029952.

The previous prime is 18090043. The next prime is 18090053. The reversal of 18090048 is 84009081.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18090043) and next prime (18090053).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18089997 and 18090024.

It is not an unprimeable number, because it can be changed into a prime (18090041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46918 + ... + 47301.

It is an arithmetic number, because the mean of its divisors is an integer number (1709420).

Almost surely, 2^18090048 is an apocalyptic number.

It is an amenable number.

18090048 is an abundant number, since it is smaller than the sum of its proper divisors (29773712).

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

18090048 is an equidigital number, since it uses as much as digits as its factorization.

18090048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94234 (or 94224 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 18090048 is about 4253.2397063885. The cubic root of 18090048 is about 262.5104358663.

The spelling of 18090048 in words is "eighteen million, ninety thousand, forty-eight".