78328588 has 24 divisors (see below), whose sum is σ = 156304512. Its totient is φ = 34024704.

The previous prime is 78328553. The next prime is 78328603. The reversal of 78328588 is 88582387.

It is a super-2 number, since 2×78328588² = 12270735396147488, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43420 + ... + 45187.

It is an arithmetic number, because the mean of its divisors is an integer number (6512688).

Almost surely, 2^78328588 is an apocalyptic number.

It is an amenable number.

78328588 is a deficient number, since it is larger than the sum of its proper divisors (77975924).

78328588 is a wasteful number, since it uses less digits than its factorization.

78328588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88641 (or 88639 counting only the distinct ones).

The product of its digits is 860160, while the sum is 49.

The square root of 78328588 is about 8850.3439481186. The cubic root of 78328588 is about 427.8650038630.

The spelling of 78328588 in words is "seventy-eight million, three hundred twenty-eight thousand, five hundred eighty-eight".