829431620 has 12 divisors (see below), whose sum is σ = 1741806444. Its totient is φ = 331772640.

The previous prime is 829431613. The next prime is 829431623. The reversal of 829431620 is 26134928.

It can be written as a sum of positive squares in 2 ways, for example, as 168324676 + 661106944 = 12974^2 + 25712^2 .

It is not an unprimeable number, because it can be changed into a prime (829431623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20735771 + ... + 20735810.

It is an arithmetic number, because the mean of its divisors is an integer number (145150537).

Almost surely, 2^829431620 is an apocalyptic number.

It is an amenable number.

829431620 is an abundant number, since it is smaller than the sum of its proper divisors (912374824).

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

829431620 is a wasteful number, since it uses less digits than its factorization.

829431620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41471590 (or 41471588 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 829431620 is about 28799.8545135214. The cubic root of 829431620 is about 939.5650696539.

The spelling of 829431620 in words is "eight hundred twenty-nine million, four hundred thirty-one thousand, six hundred twenty".