78005204928 has 224 divisors, whose sum is σ = 263244787200. Its totient is φ = 22188238848.

The previous prime is 78005204909. The next prime is 78005204933. The reversal of 78005204928 is 82940250087.

78005204928 is a `hidden beast` number, since 7 + 80 + 0 + 520 + 49 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2731588 + ... + 2759996.

Almost surely, 2^78005204928 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 78005204928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131622393600).

78005204928 is an abundant number, since it is smaller than the sum of its proper divisors (185239582272).

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

78005204928 is a wasteful number, since it uses less digits than its factorization.

78005204928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28664 (or 28648 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 78005204928 in words is "seventy-eight billion, five million, two hundred four thousand, nine hundred twenty-eight".