18036480 has 288 divisors, whose sum is σ = 72995328. Its totient is φ = 3686400.

The previous prime is 18036457. The next prime is 18036509. The reversal of 18036480 is 8463081.

It is a happy number.

It is a super-2 number, since 2×18036480² = 650629221580800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 295650 + ... + 295710.

It is an arithmetic number, because the mean of its divisors is an integer number (253456).

Almost surely, 2^18036480 is an apocalyptic number.

18036480 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 18036480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36497664).

18036480 is an abundant number, since it is smaller than the sum of its proper divisors (54958848).

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

18036480 is a wasteful number, since it uses less digits than its factorization.

18036480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 18036480 is about 4246.9377202874. The cubic root of 18036480 is about 262.2510655921.

The spelling of 18036480 in words is "eighteen million, thirty-six thousand, four hundred eighty".