82543040 has 28 divisors (see below), whose sum is σ = 196556376. Its totient is φ = 33017088.

The previous prime is 82543033. The next prime is 82543057. The reversal of 82543040 is 4034528.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128654 + ... + 129293.

Almost surely, 2^82543040 is an apocalyptic number.

82543040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

82543040 is an abundant number, since it is smaller than the sum of its proper divisors (114013336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82543040 is a wasteful number, since it uses less digits than its factorization.

82543040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257964 (or 257954 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 82543040 is about 9085.3200273848. The cubic root of 82543040 is about 435.4050747380.

Adding to 82543040 its reverse (4034528), we get a palindrome (86577568).

The spelling of 82543040 in words is "eighty-two million, five hundred forty-three thousand, forty".