83881116 has 48 divisors (see below), whose sum is σ = 237242880. Its totient is φ = 25418160.

The previous prime is 83881099. The next prime is 83881117. The reversal of 83881116 is 61118838.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83881117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34116 + ... + 36491.

It is an arithmetic number, because the mean of its divisors is an integer number (4942560).

Almost surely, 2^83881116 is an apocalyptic number.

It is an amenable number.

83881116 is an abundant number, since it is smaller than the sum of its proper divisors (153361764).

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

83881116 is a wasteful number, since it uses less digits than its factorization.

83881116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70631 (or 70623 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The square root of 83881116 is about 9158.6634396073. The cubic root of 83881116 is about 437.7452074127.

The spelling of 83881116 in words is "eighty-three million, eight hundred eighty-one thousand, one hundred sixteen".