82878543 has 12 divisors (see below), whose sum is σ = 130596648. Its totient is φ = 50229360.

The previous prime is 82878527. The next prime is 82878547. The reversal of 82878543 is 34587828.

It is not a de Polignac number, because 82878543 - 2⁴ = 82878527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82878547) 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, 418480 + ... + 418677.

It is an arithmetic number, because the mean of its divisors is an integer number (10883054).

Almost surely, 2^82878543 is an apocalyptic number.

82878543 is a deficient number, since it is larger than the sum of its proper divisors (47718105).

82878543 is a wasteful number, since it uses less digits than its factorization.

82878543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837174 (or 837171 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 82878543 is about 9103.7653199102. The cubic root of 82878543 is about 435.9941905771.

It can be divided in two parts, 828785 and 43, that added together give a palindrome (828828).

The spelling of 82878543 in words is "eighty-two million, eight hundred seventy-eight thousand, five hundred forty-three".