1808736 has 48 divisors (see below), whose sum is σ = 4826304. Its totient is φ = 593024.

The previous prime is 1808713. The next prime is 1808761. The reversal of 1808736 is 6378081.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 1808697 and 1808706.

It is a congruent number.

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, 7855 + ... + 8081.

It is an arithmetic number, because the mean of its divisors is an integer number (100548).

2^1808736 is an apocalyptic number.

1808736 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 1808736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2413152).

1808736 is an abundant number, since it is smaller than the sum of its proper divisors (3017568).

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

1808736 is a wasteful number, since it uses less digits than its factorization.

1808736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 1808736 is about 1344.8925607646. The cubic root of 1808736 is about 121.8405154243.

The spelling of 1808736 in words is "one million, eight hundred eight thousand, seven hundred thirty-six".