82026589 has 4 divisors (see below), whose sum is σ = 84672640. Its totient is φ = 79380540.

The previous prime is 82026577. The next prime is 82026599. The reversal of 82026589 is 98562028.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82026589 - 2⁵ = 82026557 is a prime.

It is a super-2 number, since 2×82026589² = 13456722605949842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82026509) 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, 1322979 + ... + 1323040.

It is an arithmetic number, because the mean of its divisors is an integer number (21168160).

Almost surely, 2^82026589 is an apocalyptic number.

It is an amenable number.

82026589 is a deficient number, since it is larger than the sum of its proper divisors (2646051).

82026589 is a wasteful number, since it uses less digits than its factorization.

82026589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646050.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 82026589 is about 9056.8531510674. The cubic root of 82026589 is about 434.4951009894.

The spelling of 82026589 in words is "eighty-two million, twenty-six thousand, five hundred eighty-nine".