1804800 has 120 divisors (see below), whose sum is σ = 6088896. Its totient is φ = 471040.

The previous prime is 1804799. The next prime is 1804801. The reversal of 1804800 is 84081.

It is an interprime number because it is at equal distance from previous prime (1804799) and next prime (1804801).

It is a tau number, because it is divible by the number of its divisors (120).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1804801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38377 + ... + 38423.

2^1804800 is an apocalyptic number.

1804800 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 1804800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3044448).

1804800 is an abundant number, since it is smaller than the sum of its proper divisors (4284096).

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

1804800 is an equidigital number, since it uses as much as digits as its factorization.

1804800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 1804800 is about 1343.4284498997. The cubic root of 1804800 is about 121.7520719753.

Adding to 1804800 its reverse (84081), we get a palindrome (1888881).

The spelling of 1804800 in words is "one million, eight hundred four thousand, eight hundred".