82019747 has 8 divisors (see below), whose sum is σ = 88693056. Its totient is φ = 75551872.

The previous prime is 82019741. The next prime is 82019759. The reversal of 82019747 is 74791028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82019747 - 2¹⁶ = 81954211 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 82019747.

It is not an unprimeable number, because it can be changed into a prime (82019741) 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 7 ways as a sum of consecutive naturals, for example, 50528 + ... + 52125.

It is an arithmetic number, because the mean of its divisors is an integer number (11086632).

Almost surely, 2^82019747 is an apocalyptic number.

82019747 is a deficient number, since it is larger than the sum of its proper divisors (6673309).

82019747 is a wasteful number, since it uses less digits than its factorization.

82019747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102717.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 82019747 is about 9056.4754181746. The cubic root of 82019747 is about 434.4830199550.

The spelling of 82019747 in words is "eighty-two million, nineteen thousand, seven hundred forty-seven".