830740840 has 32 divisors (see below), whose sum is σ = 1875797280. Its totient is φ = 331117632.

The previous prime is 830740793. The next prime is 830740847. The reversal of 830740840 is 48047038.

It is a junction number, because it is equal to n+sod(n) for n = 830740796 and 830740805.

It is not an unprimeable number, because it can be changed into a prime (830740847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25374 + ... + 48013.

It is an arithmetic number, because the mean of its divisors is an integer number (58618665).

Almost surely, 2^830740840 is an apocalyptic number.

It is an amenable number.

830740840 is an abundant number, since it is smaller than the sum of its proper divisors (1045056440).

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

830740840 is a wasteful number, since it uses less digits than its factorization.

830740840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73681 (or 73677 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 830740840 is about 28822.5751798829. The cubic root of 830740840 is about 940.0591633201.

Adding to 830740840 its reverse (48047038), we get a palindrome (878787878).

The spelling of 830740840 in words is "eight hundred thirty million, seven hundred forty thousand, eight hundred forty".