801843840 has 384 divisors, whose sum is σ = 3307003200. Its totient is φ = 183085056.

The previous prime is 801843817. The next prime is 801843851. The reversal of 801843840 is 48348108.

It is a tau number, because it is divible by the number of its divisors (384).

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 = 801843795 and 801843804.

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, 846247 + ... + 847193.

Almost surely, 2^801843840 is an apocalyptic number.

801843840 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 801843840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1653501600).

801843840 is an abundant number, since it is smaller than the sum of its proper divisors (2505159360).

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

801843840 is a wasteful number, since it uses less digits than its factorization.

801843840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989 (or 964 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 801843840 is about 28316.8472821393. The cubic root of 801843840 is about 929.0304150949.

The spelling of 801843840 in words is "eight hundred one million, eight hundred forty-three thousand, eight hundred forty".