83128308 has 24 divisors (see below), whose sum is σ = 194826912. Its totient is φ = 27586464.

The previous prime is 83128301. The next prime is 83128319. The reversal of 83128308 is 80382138.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83128301) 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 7 ways as a sum of consecutive naturals, for example, 12535 + ... + 17982.

It is an arithmetic number, because the mean of its divisors is an integer number (8117788).

Almost surely, 2^83128308 is an apocalyptic number.

It is an amenable number.

83128308 is an abundant number, since it is smaller than the sum of its proper divisors (111698604).

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

83128308 is a wasteful number, since it uses less digits than its factorization.

83128308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30751 (or 30749 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 83128308 is about 9117.4726761313. The cubic root of 83128308 is about 436.4317259437.

It can be divided in two parts, 83128 and 308, that added together give a triangular number (83436 = T₄₀₈).

The spelling of 83128308 in words is "eighty-three million, one hundred twenty-eight thousand, three hundred eight".