82912811 has 8 divisors (see below), whose sum is σ = 83732880. Its totient is φ = 82096128.

The previous prime is 82912807. The next prime is 82912831. The reversal of 82912811 is 11821928.

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

It is a cyclic number.

It is not a de Polignac number, because 82912811 - 2² = 82912807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82912801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104960 + ... + 105746.

It is an arithmetic number, because the mean of its divisors is an integer number (10466610).

Almost surely, 2^82912811 is an apocalyptic number.

82912811 is a deficient number, since it is larger than the sum of its proper divisors (820069).

82912811 is a wasteful number, since it uses less digits than its factorization.

82912811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693.

The product of its digits is 2304, while the sum is 32.

The square root of 82912811 is about 9105.6472037961. The cubic root of 82912811 is about 436.0542728360.

The spelling of 82912811 in words is "eighty-two million, nine hundred twelve thousand, eight hundred eleven".