78500208 has 80 divisors (see below), whose sum is σ = 210522240. Its totient is φ = 25189632.

The previous prime is 78500197. The next prime is 78500231. The reversal of 78500208 is 80200587.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 149835 + ... + 150357.

It is an arithmetic number, because the mean of its divisors is an integer number (2631528).

Almost surely, 2^78500208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78500208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105261120).

78500208 is an abundant number, since it is smaller than the sum of its proper divisors (132022032).

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

78500208 is a wasteful number, since it uses less digits than its factorization.

78500208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 78500208 is about 8860.0343114460. The cubic root of 78500208 is about 428.1772637494.

The spelling of 78500208 in words is "seventy-eight million, five hundred thousand, two hundred eight".