78832780 has 48 divisors (see below), whose sum is σ = 179321184. Its totient is φ = 28938240.

The previous prime is 78832769. The next prime is 78832781. The reversal of 78832780 is 8723887.

It is not an unprimeable number, because it can be changed into a prime (78832781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49395 + ... + 50965.

It is an arithmetic number, because the mean of its divisors is an integer number (3735858).

Almost surely, 2^78832780 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 78832780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89660592).

78832780 is an abundant number, since it is smaller than the sum of its proper divisors (100488404).

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

78832780 is a wasteful number, since it uses less digits than its factorization.

78832780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786 (or 1784 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 78832780 is about 8878.7825742046. The cubic root of 78832780 is about 428.7810801757.

The spelling of 78832780 in words is "seventy-eight million, eight hundred thirty-two thousand, seven hundred eighty".