82015219 has 16 divisors (see below), whose sum is σ = 99681120. Its totient is φ = 66447360.

The previous prime is 82015207. The next prime is 82015223. The reversal of 82015219 is 91251028.

It is a cyclic number.

It is not a de Polignac number, because 82015219 - 2¹³ = 82007027 is a prime.

It is a super-2 number, since 2×82015219² = 13452992295235922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82015819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5742 + ... + 14035.

It is an arithmetic number, because the mean of its divisors is an integer number (6230070).

Almost surely, 2^82015219 is an apocalyptic number.

82015219 is a deficient number, since it is larger than the sum of its proper divisors (17665901).

82015219 is a wasteful number, since it uses less digits than its factorization.

82015219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19830.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 82015219 is about 9056.2254278480. The cubic root of 82015219 is about 434.4750244198.

The spelling of 82015219 in words is "eighty-two million, fifteen thousand, two hundred nineteen".