82422020 has 24 divisors (see below), whose sum is σ = 176770944. Its totient is φ = 32266976.

The previous prime is 82421987. The next prime is 82422023. The reversal of 82422020 is 2022428.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 82421983 and 82422001.

It is not an unprimeable number, because it can be changed into a prime (82422023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 42902 + ... + 44781.

It is an arithmetic number, because the mean of its divisors is an integer number (7365456).

Almost surely, 2^82422020 is an apocalyptic number.

It is an amenable number.

82422020 is an abundant number, since it is smaller than the sum of its proper divisors (94348924).

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

82422020 is a wasteful number, since it uses less digits than its factorization.

82422020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87739 (or 87737 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 82422020 is about 9078.6573897245. The cubic root of 82422020 is about 435.1921817840.

Adding to 82422020 its reverse (2022428), we get a palindrome (84444448).

The spelling of 82422020 in words is "eighty-two million, four hundred twenty-two thousand, twenty".