83871020 has 12 divisors (see below), whose sum is σ = 176129184. Its totient is φ = 33548400.

The previous prime is 83871001. The next prime is 83871043. The reversal of 83871020 is 2017838.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2096756 + ... + 2096795.

It is an arithmetic number, because the mean of its divisors is an integer number (14677432).

Almost surely, 2^83871020 is an apocalyptic number.

It is an amenable number.

83871020 is an abundant number, since it is smaller than the sum of its proper divisors (92258164).

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

83871020 is a wasteful number, since it uses less digits than its factorization.

83871020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193560 (or 4193558 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 83871020 is about 9158.1122508954. The cubic root of 83871020 is about 437.7276442505.

Adding to 83871020 its reverse (2017838), we get a palindrome (85888858).

The spelling of 83871020 in words is "eighty-three million, eight hundred seventy-one thousand, twenty".