82274447 has 4 divisors (see below), whose sum is σ = 82412400. Its totient is φ = 82136496.

The previous prime is 82274429. The next prime is 82274449. The reversal of 82274447 is 74447228.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82274447 - 2⁶ = 82274383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82274447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82274449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68078 + ... + 69275.

It is an arithmetic number, because the mean of its divisors is an integer number (20603100).

Almost surely, 2^82274447 is an apocalyptic number.

82274447 is a deficient number, since it is larger than the sum of its proper divisors (137953).

82274447 is a wasteful number, since it uses less digits than its factorization.

82274447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137952.

The product of its digits is 100352, while the sum is 38.

The square root of 82274447 is about 9070.5262802111. The cubic root of 82274447 is about 434.9322958002.

The spelling of 82274447 in words is "eighty-two million, two hundred seventy-four thousand, four hundred forty-seven".