83109078 has 160 divisors (see below), whose sum is σ = 221168640. Its totient is φ = 23094720.

The previous prime is 83109043. The next prime is 83109079. The reversal of 83109078 is 87090138.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83109079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1240401 + ... + 1240467.

It is an arithmetic number, because the mean of its divisors is an integer number (1382304).

Almost surely, 2^83109078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83109078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110584320).

83109078 is an abundant number, since it is smaller than the sum of its proper divisors (138059562).

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

83109078 is a wasteful number, since it uses less digits than its factorization.

83109078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 83109078 is about 9116.4180465795. The cubic root of 83109078 is about 436.3980702231.

The spelling of 83109078 in words is "eighty-three million, one hundred nine thousand, seventy-eight".