808251840 has 336 divisors, whose sum is σ = 3134416896. Its totient is φ = 189388800.

The previous prime is 808251827. The next prime is 808251869. The reversal of 808251840 is 48152808.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 808251795 and 808251804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 981669 + ... + 982491.

Almost surely, 2^808251840 is an apocalyptic number.

808251840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 808251840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1567208448).

808251840 is an abundant number, since it is smaller than the sum of its proper divisors (2326165056).

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

808251840 is a wasteful number, since it uses less digits than its factorization.

808251840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888 (or 875 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 808251840 is about 28429.7703121218. The cubic root of 808251840 is about 931.4986589408.

The spelling of 808251840 in words is "eight hundred eight million, two hundred fifty-one thousand, eight hundred forty".