1803480 has 128 divisors (see below), whose sum is σ = 6566400. Its totient is φ = 387072.

The previous prime is 1803469. The next prime is 1803493. The reversal of 1803480 is 843081.

It is a super-2 number, since 2×1803480² = 6505080220800, which contains 22 as substring.

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 1803480.

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, 15904 + ... + 16016.

It is an arithmetic number, because the mean of its divisors is an integer number (51300).

2^1803480 is an apocalyptic number.

1803480 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 1803480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3283200).

1803480 is an abundant number, since it is smaller than the sum of its proper divisors (4762920).

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

1803480 is a wasteful number, since it uses less digits than its factorization.

1803480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 149 counting only the distinct ones).

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

The square root of 1803480 is about 1342.9370796877. The cubic root of 1803480 is about 121.7223822716.

The spelling of 1803480 in words is "one million, eight hundred three thousand, four hundred eighty".