82820228884 has 24 divisors (see below), whose sum is σ = 147690867240. Its totient is φ = 40623058944.

The previous prime is 82820228867. The next prime is 82820228929. The reversal of 82820228884 is 48882202828.

It can be written as a sum of positive squares in 4 ways, for example, as 14818192900 + 68002035984 = 121730^2 + 260772^2 .

It is a super-3 number, since 3×82820228884³ (a number of 34 digits) contains 333 as substring.

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, 1747452 + ... + 1794220.

It is an arithmetic number, because the mean of its divisors is an integer number (6153786135).

Almost surely, 2^82820228884 is an apocalyptic number.

It is an amenable number.

82820228884 is a deficient number, since it is larger than the sum of its proper divisors (64870638356).

82820228884 is a wasteful number, since it uses less digits than its factorization.

82820228884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55179 (or 55177 counting only the distinct ones).

The product of its (nonzero) digits is 2097152, while the sum is 52.

The spelling of 82820228884 in words is "eighty-two billion, eight hundred twenty million, two hundred twenty-eight thousand, eight hundred eighty-four".