78130056 has 64 divisors (see below), whose sum is σ = 200620800. Its totient is φ = 25346048.

The previous prime is 78130049. The next prime is 78130061. The reversal of 78130056 is 65003187.

It is a super-2 number, since 2×78130056² = 12208611301126272, which contains 22 as substring.

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, 303880 + ... + 304136.

It is an arithmetic number, because the mean of its divisors is an integer number (3134700).

Almost surely, 2^78130056 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 78130056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100310400).

78130056 is an abundant number, since it is smaller than the sum of its proper divisors (122490744).

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

78130056 is a wasteful number, since it uses less digits than its factorization.

78130056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 78130056 is about 8839.1207707554. The cubic root of 78130056 is about 427.5032084845.

The spelling of 78130056 in words is "seventy-eight million, one hundred thirty thousand, fifty-six".