82285191 has 24 divisors (see below), whose sum is σ = 128034816. Its totient is φ = 50775120.

The previous prime is 82285169. The next prime is 82285199. The reversal of 82285191 is 19158228.

It is not a de Polignac number, because 82285191 - 2¹⁸ = 82023047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82285199) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6 + ... + 12828.

It is an arithmetic number, because the mean of its divisors is an integer number (5334784).

Almost surely, 2^82285191 is an apocalyptic number.

82285191 is a deficient number, since it is larger than the sum of its proper divisors (45749625).

82285191 is a wasteful number, since it uses less digits than its factorization.

82285191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12883 (or 12880 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 82285191 is about 9071.1185087618. The cubic root of 82285191 is about 434.9512271913.

The spelling of 82285191 in words is "eighty-two million, two hundred eighty-five thousand, one hundred ninety-one".