82729641 has 4 divisors (see below), whose sum is σ = 110306192. Its totient is φ = 55153092.

The previous prime is 82729637. The next prime is 82729649. The reversal of 82729641 is 14692728.

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 not a de Polignac number, because 82729641 - 2² = 82729637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82729641.

It is not an unprimeable number, because it can be changed into a prime (82729649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13788271 + ... + 13788276.

It is an arithmetic number, because the mean of its divisors is an integer number (27576548).

Almost surely, 2^82729641 is an apocalyptic number.

It is an amenable number.

82729641 is a deficient number, since it is larger than the sum of its proper divisors (27576551).

82729641 is a wasteful number, since it uses less digits than its factorization.

82729641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27576550.

The product of its digits is 48384, while the sum is 39.

The square root of 82729641 is about 9095.5835986483. The cubic root of 82729641 is about 435.7329274373.

The spelling of 82729641 in words is "eighty-two million, seven hundred twenty-nine thousand, six hundred forty-one".