829609020 has 96 divisors (see below), whose sum is σ = 2613811200. Its totient is φ = 218417472.

The previous prime is 829609007. The next prime is 829609021. The reversal of 829609020 is 20906928.

829609020 is a `hidden beast` number, since 8 + 29 + 609 + 0 + 20 = 666.

829609020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×829609020² = 1376502252130720800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (829609021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32937 + ... + 52383.

It is an arithmetic number, because the mean of its divisors is an integer number (27227200).

Almost surely, 2^829609020 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 829609020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1306905600).

829609020 is an abundant number, since it is smaller than the sum of its proper divisors (1784202180).

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

829609020 is a wasteful number, since it uses less digits than its factorization.

829609020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19544 (or 19536 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 829609020 is about 28802.9342255264. The cubic root of 829609020 is about 939.6320500445.

The spelling of 829609020 in words is "eight hundred twenty-nine million, six hundred nine thousand, twenty".