18075840 has 112 divisors (see below), whose sum is σ = 60472320. Its totient is φ = 4561920.

The previous prime is 18075829. The next prime is 18075857. The reversal of 18075840 is 4857081.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17745 + ... + 18735.

Almost surely, 2^18075840 is an apocalyptic number.

18075840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18075840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30236160).

18075840 is an abundant number, since it is smaller than the sum of its proper divisors (42396480).

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

18075840 is a wasteful number, since it uses less digits than its factorization.

18075840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 18075840 is about 4251.5691221007. The cubic root of 18075840 is about 262.4416922648.

It can be divided in two parts, 18075 and 840, that added together give a triangular number (18915 = T₁₉₄).

The spelling of 18075840 in words is "eighteen million, seventy-five thousand, eight hundred forty".