820413130 has 8 divisors (see below), whose sum is σ = 1476743652. Its totient is φ = 328165248.

The previous prime is 820413119. The next prime is 820413131. The reversal of 820413130 is 31314028.

It can be written as a sum of positive squares in 2 ways, for example, as 771006289 + 49406841 = 27767^2 + 7029^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (820413131) 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, 41020647 + ... + 41020666.

Almost surely, 2^820413130 is an apocalyptic number.

820413130 is a deficient number, since it is larger than the sum of its proper divisors (656330522).

820413130 is a wasteful number, since it uses less digits than its factorization.

820413130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82041320.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 820413130 is about 28642.8547809048. The cubic root of 820413130 is about 936.1473251980.

Adding to 820413130 its reverse (31314028), we get a palindrome (851727158).

The spelling of 820413130 in words is "eight hundred twenty million, four hundred thirteen thousand, one hundred thirty".