78851760 has 160 divisors (see below), whose sum is σ = 266649600. Its totient is φ = 19160064.

The previous prime is 78851741. The next prime is 78851779. The reversal of 78851760 is 6715887.

It is an interprime number because it is at equal distance from previous prime (78851741) and next prime (78851779).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 396141 + ... + 396339.

It is an arithmetic number, because the mean of its divisors is an integer number (1666560).

Almost surely, 2^78851760 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 78851760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133324800).

78851760 is an abundant number, since it is smaller than the sum of its proper divisors (187797840).

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

78851760 is a wasteful number, since it uses less digits than its factorization.

78851760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 78851760 is about 8879.8513501072. The cubic root of 78851760 is about 428.8154889241.

The spelling of 78851760 in words is "seventy-eight million, eight hundred fifty-one thousand, seven hundred sixty".