18270540 has 36 divisors (see below), whose sum is σ = 55421184. Its totient is φ = 4872096.

The previous prime is 18270523. The next prime is 18270559. The reversal of 18270540 is 4507281.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 50572 + ... + 50931.

Almost surely, 2^18270540 is an apocalyptic number.

18270540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18270540 is an abundant number, since it is smaller than the sum of its proper divisors (37150644).

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

18270540 is a wasteful number, since it uses less digits than its factorization.

18270540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101518 (or 101513 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 18270540 is about 4274.4052217823. The cubic root of 18270540 is about 263.3806071549.

The spelling of 18270540 in words is "eighteen million, two hundred seventy thousand, five hundred forty".