1808648 has 32 divisors (see below), whose sum is σ = 3640800. Its totient is φ = 839808.

The previous prime is 1808627. The next prime is 1808669. The reversal of 1808648 is 8468081.

It is an interprime number because it is at equal distance from previous prime (1808627) and next prime (1808669).

It is a plaindrome in base 9.

It is a zygodrome in base 9.

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, 11015 + ... + 11177.

It is an arithmetic number, because the mean of its divisors is an integer number (113775).

2^1808648 is an apocalyptic number.

It is an amenable number.

1808648 is an abundant number, since it is smaller than the sum of its proper divisors (1832152).

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

1808648 is a wasteful number, since it uses less digits than its factorization.

1808648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 1808648 is about 1344.8598439986. The cubic root of 1808648 is about 121.8385394331.

The spelling of 1808648 in words is "one million, eight hundred eight thousand, six hundred forty-eight".