83805136 has 20 divisors (see below), whose sum is σ = 165828672. Its totient is φ = 41010656.

The previous prime is 83805131. The next prime is 83805149. The reversal of 83805136 is 63150838.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83805131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54970 + ... + 56473.

Almost surely, 2^83805136 is an apocalyptic number.

It is an amenable number.

83805136 is a deficient number, since it is larger than the sum of its proper divisors (82023536).

83805136 is a wasteful number, since it uses less digits than its factorization.

83805136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111498 (or 111492 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 83805136 is about 9154.5145147080. The cubic root of 83805136 is about 437.6129967721.

The spelling of 83805136 in words is "eighty-three million, eight hundred five thousand, one hundred thirty-six".