82140487 has 24 divisors (see below), whose sum is σ = 98611520. Its totient is φ = 67953600.

The previous prime is 82140479. The next prime is 82140493. The reversal of 82140487 is 78404128.

It is not a de Polignac number, because 82140487 - 2³ = 82140479 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 (82140437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123937 + ... + 124597.

Almost surely, 2^82140487 is an apocalyptic number.

82140487 is a deficient number, since it is larger than the sum of its proper divisors (16471033).

82140487 is a wasteful number, since it uses less digits than its factorization.

82140487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 764 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 82140487 is about 9063.1389154089. The cubic root of 82140487 is about 434.6961140012.

The spelling of 82140487 in words is "eighty-two million, one hundred forty thousand, four hundred eighty-seven".