82486431 has 40 divisors (see below), whose sum is σ = 134077680. Its totient is φ = 50326272.

The previous prime is 82486421. The next prime is 82486433. The reversal of 82486431 is 13468428.

82486431 is a `hidden beast` number, since 8 + 2 + 4 + 8 + 643 + 1 = 666.

It is not a de Polignac number, because 82486431 - 2⁵ = 82486399 is a prime.

It is a super-2 number, since 2×82486431² = 13608022598235522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82486433) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 50140 + ... + 51758.

It is an arithmetic number, because the mean of its divisors is an integer number (3351942).

Almost surely, 2^82486431 is an apocalyptic number.

82486431 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

82486431 is a deficient number, since it is larger than the sum of its proper divisors (51591249).

82486431 is a wasteful number, since it uses less digits than its factorization.

82486431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685 (or 1676 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 82486431 is about 9082.2040827103. The cubic root of 82486431 is about 435.3055166464.

The spelling of 82486431 in words is "eighty-two million, four hundred eighty-six thousand, four hundred thirty-one".