78030528 has 56 divisors (see below), whose sum is σ = 210872832. Its totient is φ = 25453824.

The previous prime is 78030523. The next prime is 78030539. The reversal of 78030528 is 82503087.

It is not an unprimeable number, because it can be changed into a prime (78030523) 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, 4701 + ... + 13347.

Almost surely, 2^78030528 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 78030528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105436416).

78030528 is an abundant number, since it is smaller than the sum of its proper divisors (132842304).

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

78030528 is a wasteful number, since it uses less digits than its factorization.

78030528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8709 (or 8699 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 78030528 is about 8833.4890049176. The cubic root of 78030528 is about 427.3216026617.

The spelling of 78030528 in words is "seventy-eight million, thirty thousand, five hundred twenty-eight".