83138536 has 24 divisors (see below), whose sum is σ = 168801030. Its totient is φ = 38371008.

The previous prime is 83138501. The next prime is 83138543. The reversal of 83138536 is 63583138.

It can be written as a sum of positive squares in 3 ways, for example, as 65448100 + 17690436 = 8090^2 + 4206^2 .

It is a Smith number, since the sum of its digits (37) 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 = 83138495 and 83138504.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29395 + ... + 32098.

Almost surely, 2^83138536 is an apocalyptic number.

It is an amenable number.

83138536 is an abundant number, since it is smaller than the sum of its proper divisors (85662494).

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

83138536 is a wasteful number, since it uses less digits than its factorization.

83138536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61525 (or 61508 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 83138536 is about 9118.0335599295. The cubic root of 83138536 is about 436.4496245422.

The spelling of 83138536 in words is "eighty-three million, one hundred thirty-eight thousand, five hundred thirty-six".