842783868 has 36 divisors (see below), whose sum is σ = 2131359048. Its totient is φ = 280797600.

The previous prime is 842783867. The next prime is 842783873. The reversal of 842783868 is 868387248.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×842783868² = 1420569296322082848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842783867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102718 + ... + 110618.

It is an arithmetic number, because the mean of its divisors is an integer number (59204418).

Almost surely, 2^842783868 is an apocalyptic number.

It is an amenable number.

842783868 is an abundant number, since it is smaller than the sum of its proper divisors (1288575180).

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

842783868 is a wasteful number, since it uses less digits than its factorization.

842783868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10874 (or 10869 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 54.

The square root of 842783868 is about 29030.7400525719. The cubic root of 842783868 is about 944.5799829940.

The spelling of 842783868 in words is "eight hundred forty-two million, seven hundred eighty-three thousand, eight hundred sixty-eight".