18140480 has 56 divisors (see below), whose sum is σ = 43781472. Its totient is φ = 7158272.

The previous prime is 18140467. The next prime is 18140489. The reversal of 18140480 is 8404181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18140489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26219 + ... + 26901.

It is an arithmetic number, because the mean of its divisors is an integer number (781812).

Almost surely, 2^18140480 is an apocalyptic number.

18140480 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 18140480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21890736).

18140480 is an abundant number, since it is smaller than the sum of its proper divisors (25640992).

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

18140480 is an equidigital number, since it uses as much as digits as its factorization.

18140480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 773 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 18140480 is about 4259.1642372653. The cubic root of 18140480 is about 262.7541544510.

The spelling of 18140480 in words is "eighteen million, one hundred forty thousand, four hundred eighty".