834401020 has 12 divisors (see below), whose sum is σ = 1752242184. Its totient is φ = 333760400.

The previous prime is 834400997. The next prime is 834401027. The reversal of 834401020 is 20104438.

It is a junction number, because it is equal to n+sod(n) for n = 834400982 and 834401000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (834401027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20860006 + ... + 20860045.

It is an arithmetic number, because the mean of its divisors is an integer number (146020182).

Almost surely, 2^834401020 is an apocalyptic number.

It is an amenable number.

834401020 is an abundant number, since it is smaller than the sum of its proper divisors (917841164).

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

834401020 is a wasteful number, since it uses less digits than its factorization.

834401020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41720060 (or 41720058 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 834401020 is about 28886.0004154262. Note that the first 3 decimals coincide. The cubic root of 834401020 is about 941.4377500133.

Adding to 834401020 its reverse (20104438), we get a palindrome (854505458).

The spelling of 834401020 in words is "eight hundred thirty-four million, four hundred one thousand, twenty".