82422820 has 12 divisors (see below), whose sum is σ = 173087964. Its totient is φ = 32969120.

The previous prime is 82422793. The next prime is 82422827. The reversal of 82422820 is 2822428.

It can be written as a sum of positive squares in 2 ways, for example, as 23348224 + 59074596 = 4832^2 + 7686^2 .

It is not an unprimeable number, because it can be changed into a prime (82422827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2060551 + ... + 2060590.

It is an arithmetic number, because the mean of its divisors is an integer number (14423997).

Almost surely, 2^82422820 is an apocalyptic number.

It is an amenable number.

82422820 is an abundant number, since it is smaller than the sum of its proper divisors (90665144).

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

82422820 is a wasteful number, since it uses less digits than its factorization.

82422820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121150 (or 4121148 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 82422820 is about 9078.7014489959. The cubic root of 82422820 is about 435.1935897921.

The spelling of 82422820 in words is "eighty-two million, four hundred twenty-two thousand, eight hundred twenty".