82470891 has 8 divisors (see below), whose sum is σ = 112933264. Its totient is φ = 53494560.

The previous prime is 82470851. The next prime is 82470911. The reversal of 82470891 is 19807428.

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

It is not a de Polignac number, because 82470891 - 2⁷ = 82470763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82470821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371380 + ... + 371601.

It is an arithmetic number, because the mean of its divisors is an integer number (14116658).

Almost surely, 2^82470891 is an apocalyptic number.

82470891 is a deficient number, since it is larger than the sum of its proper divisors (30462373).

82470891 is a wasteful number, since it uses less digits than its factorization.

82470891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743021.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 82470891 is about 9081.3485232095. The cubic root of 82470891 is about 435.2781785234.

The spelling of 82470891 in words is "eighty-two million, four hundred seventy thousand, eight hundred ninety-one".