82170632 has 8 divisors (see below), whose sum is σ = 154069950. Its totient is φ = 41085312.

The previous prime is 82170589. The next prime is 82170653. The reversal of 82170632 is 23607128.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 45616516 + 36554116 = 6754^2 + 6046^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 82170595 and 82170604.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5135657 + ... + 5135672.

Almost surely, 2^82170632 is an apocalyptic number.

It is an amenable number.

82170632 is a deficient number, since it is larger than the sum of its proper divisors (71899318).

82170632 is a wasteful number, since it uses less digits than its factorization.

82170632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10271335 (or 10271331 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 82170632 is about 9064.8018180212. The cubic root of 82170632 is about 434.7492843363.

The spelling of 82170632 in words is "eighty-two million, one hundred seventy thousand, six hundred thirty-two".