82111040 has 56 divisors (see below), whose sum is σ = 213311232. Its totient is φ = 29857280.

The previous prime is 82111039. The next prime is 82111049. The reversal of 82111040 is 4011128.

It is not an unprimeable number, because it can be changed into a prime (82111049) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8144 + ... + 15183.

Almost surely, 2^82111040 is an apocalyptic number.

82111040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

82111040 is an abundant number, since it is smaller than the sum of its proper divisors (131200192).

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

82111040 is a wasteful number, since it uses less digits than its factorization.

82111040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23355 (or 23345 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 82111040 is about 9061.5142222478. The cubic root of 82111040 is about 434.6441622501.

Adding to 82111040 its reverse (4011128), we get a palindrome (86122168).

The spelling of 82111040 in words is "eighty-two million, one hundred eleven thousand, forty".