1804416 has 64 divisors (see below), whose sum is σ = 4961280. Its totient is φ = 580608.

The previous prime is 1804403. The next prime is 1804421. The reversal of 1804416 is 6144081.

It is a tau number, because it is divible by the number of its divisors (64).

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

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14145 + ... + 14271.

It is an arithmetic number, because the mean of its divisors is an integer number (77520).

2^1804416 is an apocalyptic number.

1804416 is a gapful number since it is divisible by the number (16) 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 1804416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2480640).

1804416 is an abundant number, since it is smaller than the sum of its proper divisors (3156864).

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

1804416 is a wasteful number, since it uses less digits than its factorization.

1804416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 169 counting only the distinct ones).

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

The square root of 1804416 is about 1343.2855243767. The cubic root of 1804416 is about 121.7434364641.

Adding to 1804416 its reverse (6144081), we get a palindrome (7948497).

The spelling of 1804416 in words is "one million, eight hundred four thousand, four hundred sixteen".