83871740 has 24 divisors (see below), whose sum is σ = 181813632. Its totient is φ = 32466240.

The previous prime is 83871737. The next prime is 83871787. The reversal of 83871740 is 4717838.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 83871694 and 83871703.

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, 67019 + ... + 68258.

It is an arithmetic number, because the mean of its divisors is an integer number (7575568).

Almost surely, 2^83871740 is an apocalyptic number.

It is an amenable number.

83871740 is an abundant number, since it is smaller than the sum of its proper divisors (97941892).

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

83871740 is a wasteful number, since it uses less digits than its factorization.

83871740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135317 (or 135315 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 83871740 is about 9158.1515602222. The cubic root of 83871740 is about 437.7288968206.

The spelling of 83871740 in words is "eighty-three million, eight hundred seventy-one thousand, seven hundred forty".