180003840 has 88 divisors (see below), whose sum is σ = 575780160. Its totient is φ = 47996928.

The previous prime is 180003833. The next prime is 180003851. The reversal of 180003840 is 48300081.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 180003840.

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, 9501 + ... + 21219.

Almost surely, 2^180003840 is an apocalyptic number.

180003840 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 180003840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287890080).

180003840 is an abundant number, since it is smaller than the sum of its proper divisors (395776320).

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

180003840 is a wasteful number, since it uses less digits than its factorization.

180003840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11747 (or 11729 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 180003840 is about 13416.5509725861. The cubic root of 180003840 is about 564.6256323871.

The spelling of 180003840 in words is "one hundred eighty million, three thousand, eight hundred forty".