808257340 has 72 divisors (see below), whose sum is σ = 1954420272. Its totient is φ = 278415360.

The previous prime is 808257311. The next prime is 808257361. The reversal of 808257340 is 43752808.

It is a self number, because there is not a number n which added to its sum of digits gives 808257340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74332 + ... + 84508.

It is an arithmetic number, because the mean of its divisors is an integer number (27144726).

Almost surely, 2^808257340 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 808257340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (977210136).

808257340 is an abundant number, since it is smaller than the sum of its proper divisors (1146162932).

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

808257340 is a wasteful number, since it uses less digits than its factorization.

808257340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10235 (or 10214 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 808257340 is about 28429.8670415463. The cubic root of 808257340 is about 931.5007718264.

The spelling of 808257340 in words is "eight hundred eight million, two hundred fifty-seven thousand, three hundred forty".