78710380 has 48 divisors (see below), whose sum is σ = 190161216. Its totient is φ = 26807040.

The previous prime is 78710371. The next prime is 78710389. The reversal of 78710380 is 8301787.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78710371) and next prime (78710389).

It is not an unprimeable number, because it can be changed into a prime (78710389) 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 15 ways as a sum of consecutive naturals, for example, 20190 + ... + 23770.

It is an arithmetic number, because the mean of its divisors is an integer number (3961692).

Almost surely, 2^78710380 is an apocalyptic number.

78710380 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78710380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95080608).

78710380 is an abundant number, since it is smaller than the sum of its proper divisors (111450836).

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

78710380 is a wasteful number, since it uses less digits than its factorization.

78710380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3754 (or 3752 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 78710380 is about 8871.8870596959. The cubic root of 78710380 is about 428.5590490604.

The spelling of 78710380 in words is "seventy-eight million, seven hundred ten thousand, three hundred eighty".