820210286886 has 32 divisors (see below), whose sum is σ = 1643220528768. Its totient is φ = 272936901120.

The previous prime is 820210286879. The next prime is 820210286887. The reversal of 820210286886 is 688682012028.

It is a super-2 number, since 2×820210286886² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820210286887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35794645 + ... + 35817551.

It is an arithmetic number, because the mean of its divisors is an integer number (51350641524).

Almost surely, 2^820210286886 is an apocalyptic number.

820210286886 is an abundant number, since it is smaller than the sum of its proper divisors (823010241882).

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

820210286886 is a wasteful number, since it uses less digits than its factorization.

820210286886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32836.

The product of its (nonzero) digits is 1179648, while the sum is 51.

The spelling of 820210286886 in words is "eight hundred twenty billion, two hundred ten million, two hundred eighty-six thousand, eight hundred eighty-six".