82221632 has 14 divisors (see below), whose sum is σ = 163158678. Its totient is φ = 41110784.

The previous prime is 82221631. The next prime is 82221637. The reversal of 82221632 is 23612228.

It can be written as a sum of positive squares in only one way, i.e., 82156096 + 65536 = 9064^2 + 256^2 .

It is not an unprimeable number, because it can be changed into a prime (82221631) 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 as a sum of consecutive naturals, namely, 642293 + ... + 642420.

Almost surely, 2^82221632 is an apocalyptic number.

It is an amenable number.

82221632 is a deficient number, since it is larger than the sum of its proper divisors (80937046).

82221632 is a wasteful number, since it uses less digits than its factorization.

82221632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284725 (or 1284715 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 82221632 is about 9067.6144602646. The cubic root of 82221632 is about 434.8392095217.

The spelling of 82221632 in words is "eighty-two million, two hundred twenty-one thousand, six hundred thirty-two".