843243648 has 128 divisors (see below), whose sum is σ = 2490432000. Its totient is φ = 251043840.

The previous prime is 843243607. The next prime is 843243671. The reversal of 843243648 is 846342348.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×843243648² = 1422119699784695808, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152028 + ... + 157476.

It is an arithmetic number, because the mean of its divisors is an integer number (19456500).

Almost surely, 2^843243648 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 843243648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1245216000).

843243648 is an abundant number, since it is smaller than the sum of its proper divisors (1647188352).

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

843243648 is a wasteful number, since it uses less digits than its factorization.

843243648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5510 (or 5498 counting only the distinct ones).

The product of its digits is 442368, while the sum is 42.

The square root of 843243648 is about 29038.6578202230. The cubic root of 843243648 is about 944.7517233606.

The spelling of 843243648 in words is "eight hundred forty-three million, two hundred forty-three thousand, six hundred forty-eight".