820170484 has 24 divisors (see below), whose sum is σ = 1648851008. Its totient is φ = 349678080.

The previous prime is 820170469. The next prime is 820170493. The reversal of 820170484 is 484071028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70482 + ... + 81289.

Almost surely, 2^820170484 is an apocalyptic number.

It is an amenable number.

820170484 is an abundant number, since it is smaller than the sum of its proper divisors (828680524).

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

820170484 is a wasteful number, since it uses less digits than its factorization.

820170484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151975 (or 151973 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 820170484 is about 28638.6187516088. The cubic root of 820170484 is about 936.0550242204.

The spelling of 820170484 in words is "eight hundred twenty million, one hundred seventy thousand, four hundred eighty-four".