78093688 has 8 divisors (see below), whose sum is σ = 146425680. Its totient is φ = 39046840.

The previous prime is 78093683. The next prime is 78093703. The reversal of 78093688 is 88639087.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78093683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4880848 + ... + 4880863.

It is an arithmetic number, because the mean of its divisors is an integer number (18303210).

Almost surely, 2^78093688 is an apocalyptic number.

It is an amenable number.

78093688 is a deficient number, since it is larger than the sum of its proper divisors (68331992).

78093688 is a wasteful number, since it uses less digits than its factorization.

78093688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9761717 (or 9761713 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 78093688 is about 8837.0633131148. The cubic root of 78093688 is about 427.4368667528.

The spelling of 78093688 in words is "seventy-eight million, ninety-three thousand, six hundred eighty-eight".