18380480 has 56 divisors (see below), whose sum is σ = 44439840. Its totient is φ = 7239680.

The previous prime is 18380471. The next prime is 18380497. The reversal of 18380480 is 8408381.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22316 + ... + 23124.

Almost surely, 2^18380480 is an apocalyptic number.

18380480 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 18380480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22219920).

18380480 is an abundant number, since it is smaller than the sum of its proper divisors (26059360).

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

18380480 is an equidigital number, since it uses as much as digits as its factorization.

18380480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 18380480 is about 4287.2462024008. The cubic root of 18380480 is about 263.9078343718.

The spelling of 18380480 in words is "eighteen million, three hundred eighty thousand, four hundred eighty".