82019287 has 12 divisors (see below), whose sum is σ = 95874456. Its totient is φ = 69960240.

The previous prime is 82019281. The next prime is 82019291. The reversal of 82019287 is 78291028.

It is not a de Polignac number, because 82019287 - 2⁷ = 82019159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82019281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6373 + ... + 14305.

It is an arithmetic number, because the mean of its divisors is an integer number (7989538).

Almost surely, 2^82019287 is an apocalyptic number.

82019287 is a deficient number, since it is larger than the sum of its proper divisors (13855169).

82019287 is a wasteful number, since it uses less digits than its factorization.

82019287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8158 (or 8151 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 82019287 is about 9056.4500219457. The cubic root of 82019287 is about 434.4822077012.

The spelling of 82019287 in words is "eighty-two million, nineteen thousand, two hundred eighty-seven".