18002880 has 336 divisors, whose sum is σ = 76078080. Its totient is φ = 3815424.

The previous prime is 18002851. The next prime is 18002891. The reversal of 18002880 is 8820081.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 383017 + ... + 383063.

Almost surely, 2^18002880 is an apocalyptic number.

18002880 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 18002880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38039040).

18002880 is an abundant number, since it is smaller than the sum of its proper divisors (58075200).

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

18002880 is a wasteful number, since it uses less digits than its factorization.

18002880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 18002880 is about 4242.9800847989. The cubic root of 18002880 is about 262.0881159629.

The spelling of 18002880 in words is "eighteen million, two thousand, eight hundred eighty".