11671808 has 36 divisors (see below), whose sum is σ = 23546880. Its totient is φ = 5773824.

The previous prime is 11671799. The next prime is 11671817. The reversal of 11671808 is 80817611.

It is an interprime number because it is at equal distance from previous prime (11671799) and next prime (11671817).

It is a super-2 number, since 2×11671808² = 272462203977728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

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 3 ways as a sum of consecutive naturals, for example, 32333 + ... + 32691.

It is an arithmetic number, because the mean of its divisors is an integer number (654080).

Almost surely, 2^11671808 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 11671808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11773440).

11671808 is an abundant number, since it is smaller than the sum of its proper divisors (11875072).

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

11671808 is an equidigital number, since it uses as much as digits as its factorization.

11671808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 32.

The square root of 11671808 is about 3416.4027865578. The cubic root of 11671808 is about 226.8363819300.

The spelling of 11671808 in words is "eleven million, six hundred seventy-one thousand, eight hundred eight".