82443641 has 16 divisors (see below), whose sum is σ = 99763200. Its totient is φ = 66553488.

The previous prime is 82443631. The next prime is 82443643. The reversal of 82443641 is 14634428.

It is a cyclic number.

It is not a de Polignac number, because 82443641 - 2⁶ = 82443577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82443598 and 82443607.

It is not an unprimeable number, because it can be changed into a prime (82443643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22076 + ... + 25538.

It is an arithmetic number, because the mean of its divisors is an integer number (6235200).

Almost surely, 2^82443641 is an apocalyptic number.

It is an amenable number.

82443641 is a deficient number, since it is larger than the sum of its proper divisors (17319559).

82443641 is a wasteful number, since it uses less digits than its factorization.

82443641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668.

The product of its digits is 18432, while the sum is 32.

The square root of 82443641 is about 9079.8480714162. The cubic root of 82443641 is about 435.2302317595.

The spelling of 82443641 in words is "eighty-two million, four hundred forty-three thousand, six hundred forty-one".