78005704 has 16 divisors (see below), whose sum is σ = 167155200. Its totient is φ = 33430992.

The previous prime is 78005701. The next prime is 78005713. The reversal of 78005704 is 40750087.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (78005701) 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 3 ways as a sum of consecutive naturals, for example, 696424 + ... + 696535.

It is an arithmetic number, because the mean of its divisors is an integer number (10447200).

Almost surely, 2^78005704 is an apocalyptic number.

It is an amenable number.

78005704 is an abundant number, since it is smaller than the sum of its proper divisors (89149496).

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

78005704 is a wasteful number, since it uses less digits than its factorization.

78005704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392972 (or 1392968 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 78005704 is about 8832.0837858345. The cubic root of 78005704 is about 427.2762829779.

The spelling of 78005704 in words is "seventy-eight million, five thousand, seven hundred four".