83856830 has 16 divisors (see below), whose sum is σ = 152133120. Its totient is φ = 33278112.

The previous prime is 83856821. The next prime is 83856833. The reversal of 83856830 is 3865838.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83856833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31745 + ... + 34284.

It is an arithmetic number, because the mean of its divisors is an integer number (9508320).

Almost surely, 2^83856830 is an apocalyptic number.

83856830 is a deficient number, since it is larger than the sum of its proper divisors (68276290).

83856830 is a wasteful number, since it uses less digits than its factorization.

83856830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66163.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 83856830 is about 9157.3374951456. The cubic root of 83856830 is about 437.7029567180.

The spelling of 83856830 in words is "eighty-three million, eight hundred fifty-six thousand, eight hundred thirty".