78668032 has 36 divisors (see below), whose sum is σ = 157600576. Its totient is φ = 39191040.

The previous prime is 78667951. The next prime is 78668033. The reversal of 78668032 is 23086687.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (78668033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124357 + ... + 124987.

Almost surely, 2^78668032 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 78668032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78800288).

78668032 is an abundant number, since it is smaller than the sum of its proper divisors (78932544).

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

78668032 is an equidigital number, since it uses as much as digits as its factorization.

78668032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134 (or 1120 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 78668032 is about 8869.5000986527. The cubic root of 78668032 is about 428.4821770546.

The spelling of 78668032 in words is "seventy-eight million, six hundred sixty-eight thousand, thirty-two".