83816172 has 36 divisors (see below), whose sum is σ = 231130536. Its totient is φ = 25398720.

The previous prime is 83816153. The next prime is 83816197. The reversal of 83816172 is 27161838.

83816172 is a `hidden beast` number, since 8 + 38 + 1 + 617 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 105433 + ... + 106224.

Almost surely, 2^83816172 is an apocalyptic number.

It is an amenable number.

83816172 is an abundant number, since it is smaller than the sum of its proper divisors (147314364).

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

83816172 is a wasteful number, since it uses less digits than its factorization.

83816172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211678 (or 211673 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 83816172 is about 9155.1172575779. The cubic root of 83816172 is about 437.6322051614.

The spelling of 83816172 in words is "eighty-three million, eight hundred sixteen thousand, one hundred seventy-two".