83236140 has 192 divisors, whose sum is σ = 284497920. Its totient is φ = 20079360.

The previous prime is 83236123. The next prime is 83236159. The reversal of 83236140 is 4163238.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 498337 + ... + 498503.

It is an arithmetic number, because the mean of its divisors is an integer number (1481760).

Almost surely, 2^83236140 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 83236140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142248960).

83236140 is an abundant number, since it is smaller than the sum of its proper divisors (201261780).

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

83236140 is a wasteful number, since it uses less digits than its factorization.

83236140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 83236140 is about 9123.3842405108. The cubic root of 83236140 is about 436.6203539122.

Adding to 83236140 its reverse (4163238), we get a palindrome (87399378).

The spelling of 83236140 in words is "eighty-three million, two hundred thirty-six thousand, one hundred forty".