78847208 has 64 divisors (see below), whose sum is σ = 168030720. Its totient is φ = 34372800.

The previous prime is 78847189. The next prime is 78847211. The reversal of 78847208 is 80274887.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 253373 + ... + 253683.

It is an arithmetic number, because the mean of its divisors is an integer number (2625480).

Almost surely, 2^78847208 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 78847208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84015360).

78847208 is an abundant number, since it is smaller than the sum of its proper divisors (89183512).

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

78847208 is a wasteful number, since it uses less digits than its factorization.

78847208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 44.

The square root of 78847208 is about 8879.5950358110. The cubic root of 78847208 is about 428.8072371291.

The spelling of 78847208 in words is "seventy-eight million, eight hundred forty-seven thousand, two hundred eight".