82226220 has 48 divisors (see below), whose sum is σ = 231100128. Its totient is φ = 21844480.

The previous prime is 82226189. The next prime is 82226227. The reversal of 82226220 is 2262228.

It is a super-2 number, since 2×82226220² = 13522302510976800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82226227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14422 + ... + 19298.

It is an arithmetic number, because the mean of its divisors is an integer number (4814586).

Almost surely, 2^82226220 is an apocalyptic number.

It is an amenable number.

82226220 is an abundant number, since it is smaller than the sum of its proper divisors (148873908).

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

82226220 is a wasteful number, since it uses less digits than its factorization.

82226220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5170 (or 5168 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 82226220 is about 9067.8674449950. The cubic root of 82226220 is about 434.8472974386.

Adding to 82226220 its reverse (2262228), we get a palindrome (84488448).

The spelling of 82226220 in words is "eighty-two million, two hundred twenty-six thousand, two hundred twenty".