82212747 has 8 divisors (see below), whose sum is σ = 109702656. Its totient is φ = 54765672.

The previous prime is 82212733. The next prime is 82212751. The reversal of 82212747 is 74721228.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82212747 - 2⁸ = 82212491 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (82212707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5923 + ... + 14124.

It is an arithmetic number, because the mean of its divisors is an integer number (13712832).

Almost surely, 2^82212747 is an apocalyptic number.

82212747 is a deficient number, since it is larger than the sum of its proper divisors (27489909).

82212747 is a wasteful number, since it uses less digits than its factorization.

82212747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21417.

The product of its digits is 12544, while the sum is 33.

The square root of 82212747 is about 9067.1245166260. The cubic root of 82212747 is about 434.8235458192.

The spelling of 82212747 in words is "eighty-two million, two hundred twelve thousand, seven hundred forty-seven".