78068928 has 112 divisors (see below), whose sum is σ = 244327680. Its totient is φ = 21525504.

The previous prime is 78068917. The next prime is 78068983. The reversal of 78068928 is 82986087.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37975 + ... + 39977.

Almost surely, 2^78068928 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 78068928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122163840).

78068928 is an abundant number, since it is smaller than the sum of its proper divisors (166258752).

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

78068928 is a wasteful number, since it uses less digits than its factorization.

78068928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054 (or 2044 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 78068928 is about 8835.6622841754. The cubic root of 78068928 is about 427.3916883020.

The spelling of 78068928 in words is "seventy-eight million, sixty-eight thousand, nine hundred twenty-eight".