83687238 has 12 divisors (see below), whose sum is σ = 181322388. Its totient is φ = 27895740.

The previous prime is 83687237. The next prime is 83687251. The reversal of 83687238 is 83278638.

It is a junction number, because it is equal to n+sod(n) for n = 83687193 and 83687202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83687231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2324628 + ... + 2324663.

It is an arithmetic number, because the mean of its divisors is an integer number (15110199).

Almost surely, 2^83687238 is an apocalyptic number.

83687238 is an abundant number, since it is smaller than the sum of its proper divisors (97635150).

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

83687238 is a wasteful number, since it uses less digits than its factorization.

83687238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4649299 (or 4649296 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 83687238 is about 9148.0729118214. The cubic root of 83687238 is about 437.4076875166.

The spelling of 83687238 in words is "eighty-three million, six hundred eighty-seven thousand, two hundred thirty-eight".