83110140 has 72 divisors (see below), whose sum is σ = 258935040. Its totient is φ = 21561984.

The previous prime is 83110129. The next prime is 83110151. The reversal of 83110140 is 4101138.

It is an interprime number because it is at equal distance from previous prime (83110129) and next prime (83110151).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 421 + ... + 12899.

It is an arithmetic number, because the mean of its divisors is an integer number (3596320).

Almost surely, 2^83110140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83110140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129467520).

83110140 is an abundant number, since it is smaller than the sum of its proper divisors (175824900).

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

83110140 is a wasteful number, since it uses less digits than its factorization.

83110140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12531 (or 12526 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 83110140 is about 9116.4762929544. The cubic root of 83110140 is about 436.3999290364.

Adding to 83110140 its reverse (4101138), we get a palindrome (87211278).

The spelling of 83110140 in words is "eighty-three million, one hundred ten thousand, one hundred forty".