83171040 has 48 divisors (see below), whose sum is σ = 261990288. Its totient is φ = 22178816.

The previous prime is 83171027. The next prime is 83171069. The reversal of 83171040 is 4017138.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 83171040.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86157 + ... + 87116.

It is an arithmetic number, because the mean of its divisors is an integer number (5458131).

Almost surely, 2^83171040 is an apocalyptic number.

83171040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

83171040 is an abundant number, since it is smaller than the sum of its proper divisors (178819248).

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

83171040 is a wasteful number, since it uses less digits than its factorization.

83171040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173291 (or 173283 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 83171040 is about 9119.8157876133. The cubic root of 83171040 is about 436.5064955228.

Adding to 83171040 its reverse (4017138), we get a palindrome (87188178).

The spelling of 83171040 in words is "eighty-three million, one hundred seventy-one thousand, forty".