1808072 has 32 divisors (see below), whose sum is σ = 3931200. Its totient is φ = 763584.

The previous prime is 1808071. The next prime is 1808077. The reversal of 1808072 is 2708081.

It is not an unprimeable number, because it can be changed into a prime (1808071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4454 + ... + 4842.

It is an arithmetic number, because the mean of its divisors is an integer number (122850).

2^1808072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1808072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1965600).

1808072 is an abundant number, since it is smaller than the sum of its proper divisors (2123128).

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

1808072 is a wasteful number, since it uses less digits than its factorization.

1808072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 1808072 is about 1344.6456782365. The cubic root of 1808072 is about 121.8256040895.

Subtracting 1808072 from its reverse (2708081), we obtain a palindrome (900009).

The spelling of 1808072 in words is "one million, eight hundred eight thousand, seventy-two".