18127480 has 64 divisors (see below), whose sum is σ = 47148480. Its totient is φ = 6144000.

The previous prime is 18127469. The next prime is 18127493. The reversal of 18127480 is 8472181.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 27960 + ... + 28600.

It is an arithmetic number, because the mean of its divisors is an integer number (736695).

Almost surely, 2^18127480 is an apocalyptic number.

18127480 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 18127480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23574240).

18127480 is an abundant number, since it is smaller than the sum of its proper divisors (29021000).

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

18127480 is a wasteful number, since it uses less digits than its factorization.

18127480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 18127480 is about 4257.6378427480. The cubic root of 18127480 is about 262.6913736741.

The spelling of 18127480 in words is "eighteen million, one hundred twenty-seven thousand, four hundred eighty".