820060280 has 64 divisors (see below), whose sum is σ = 2103978240. Its totient is φ = 284977152.

The previous prime is 820060279. The next prime is 820060291. The reversal of 820060280 is 82060028.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37544 + ... + 55223.

It is an arithmetic number, because the mean of its divisors is an integer number (32874660).

Almost surely, 2^820060280 is an apocalyptic number.

It is an amenable number.

820060280 is an abundant number, since it is smaller than the sum of its proper divisors (1283917960).

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

820060280 is a wasteful number, since it uses less digits than its factorization.

820060280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92808 (or 92804 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 820060280 is about 28636.6946416656. The cubic root of 820060280 is about 936.0130973159.

The spelling of 820060280 in words is "eight hundred twenty million, sixty thousand, two hundred eighty".