78827688 has 32 divisors (see below), whose sum is σ = 218966400. Its totient is φ = 26275824.

The previous prime is 78827687. The next prime is 78827689. The reversal of 78827688 is 88672887.

It is an interprime number because it is at equal distance from previous prime (78827687) and next prime (78827689).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (78827687) 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 7 ways as a sum of consecutive naturals, for example, 182256 + ... + 182687.

It is an arithmetic number, because the mean of its divisors is an integer number (6842700).

Almost surely, 2^78827688 is an apocalyptic number.

It is an amenable number.

78827688 is an abundant number, since it is smaller than the sum of its proper divisors (140138712).

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

78827688 is a wasteful number, since it uses less digits than its factorization.

78827688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364958 (or 364948 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 54.

The square root of 78827688 is about 8878.4958185494. The cubic root of 78827688 is about 428.7718479745.

The spelling of 78827688 in words is "seventy-eight million, eight hundred twenty-seven thousand, six hundred eighty-eight".