351808 has 28 divisors (see below), whose sum is σ = 731520. Its totient is φ = 167552.

The previous prime is 351803. The next prime is 351811. The reversal of 351808 is 808153.

It is not an unprimeable number, because it can be changed into a prime (351803) by changing a digit.

351808 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1353 + ... + 1591.

2³⁵¹⁸⁰⁸ 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 351808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365760).

351808 is an abundant number, since it is smaller than the sum of its proper divisors (379712).

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

351808 is a wasteful number, since it uses less digits than its factorization.

351808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 351808 is about 593.1340489299. The cubic root of 351808 is about 70.5941267414.

The spelling of 351808 in words is "three hundred fifty-one thousand, eight hundred eight".