83871420 has 24 divisors (see below), whose sum is σ = 234840144. Its totient is φ = 22365696.

The previous prime is 83871407. The next prime is 83871433. The reversal of 83871420 is 2417838.

It is an interprime number because it is at equal distance from previous prime (83871407) and next prime (83871433).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 698869 + ... + 698988.

It is an arithmetic number, because the mean of its divisors is an integer number (9785006).

Almost surely, 2^83871420 is an apocalyptic number.

It is an amenable number.

83871420 is an abundant number, since it is smaller than the sum of its proper divisors (150968724).

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

83871420 is a wasteful number, since it uses less digits than its factorization.

83871420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397869 (or 1397867 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 83871420 is about 9158.1340894311. The cubic root of 83871420 is about 437.7283401237.

The spelling of 83871420 in words is "eighty-three million, eight hundred seventy-one thousand, four hundred twenty".