82947305 has 16 divisors (see below), whose sum is σ = 116532864. Its totient is φ = 55489920.

The previous prime is 82947287. The next prime is 82947313. The reversal of 82947305 is 50374928.

It is a de Polignac number, because none of the positive numbers 2^k-82947305 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27467 + ... + 30336.

It is an arithmetic number, because the mean of its divisors is an integer number (7283304).

Almost surely, 2^82947305 is an apocalyptic number.

It is an amenable number.

82947305 is a deficient number, since it is larger than the sum of its proper divisors (33585559).

82947305 is a wasteful number, since it uses less digits than its factorization.

82947305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57856.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 82947305 is about 9107.5411061384. The cubic root of 82947305 is about 436.1147346252.

The spelling of 82947305 in words is "eighty-two million, nine hundred forty-seven thousand, three hundred five".