78995808 has 72 divisors (see below), whose sum is σ = 228501000. Its totient is φ = 25880064.

The previous prime is 78995803. The next prime is 78995809. The reversal of 78995808 is 80859987.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78995803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14668 + ... + 19316.

It is an arithmetic number, because the mean of its divisors is an integer number (3173625).

Almost surely, 2^78995808 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 78995808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114250500).

78995808 is an abundant number, since it is smaller than the sum of its proper divisors (149505192).

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

78995808 is a wasteful number, since it uses less digits than its factorization.

78995808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4724 (or 4713 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The square root of 78995808 is about 8887.9585957631. The cubic root of 78995808 is about 429.0764530312.

The spelling of 78995808 in words is "seventy-eight million, nine hundred ninety-five thousand, eight hundred eight".