82528643 has 4 divisors (see below), whose sum is σ = 83523048. Its totient is φ = 81534240.

The previous prime is 82528639. The next prime is 82528651. The reversal of 82528643 is 34682528.

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 82528643 - 2² = 82528639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82528597 and 82528606.

It is not an unprimeable number, because it can be changed into a prime (82528673) 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 3 ways as a sum of consecutive naturals, for example, 497078 + ... + 497243.

It is an arithmetic number, because the mean of its divisors is an integer number (20880762).

Almost surely, 2^82528643 is an apocalyptic number.

82528643 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

82528643 is a deficient number, since it is larger than the sum of its proper divisors (994405).

82528643 is an equidigital number, since it uses as much as digits as its factorization.

82528643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994404.

The product of its digits is 92160, while the sum is 38.

The square root of 82528643 is about 9084.5276707157. The cubic root of 82528643 is about 435.3797590912.

The spelling of 82528643 in words is "eighty-two million, five hundred twenty-eight thousand, six hundred forty-three".