1351808 has 32 divisors (see below), whose sum is σ = 2754000. Its totient is φ = 660736.

The previous prime is 1351799. The next prime is 1351813. The reversal of 1351808 is 8081531.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7463 + ... + 7641.

2^1351808 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 1351808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1377000).

1351808 is an abundant number, since it is smaller than the sum of its proper divisors (1402192).

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

1351808 is an equidigital number, since it uses as much as digits as its factorization.

1351808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 1351808 is about 1162.6727828585. The cubic root of 1351808 is about 110.5702616828.

The spelling of 1351808 in words is "one million, three hundred fifty-one thousand, eight hundred eight".