78709960 has 64 divisors (see below), whose sum is σ = 206737920. Its totient is φ = 26407680.

The previous prime is 78709927. The next prime is 78709997. The reversal of 78709960 is 6990787.

It is a self number, because there is not a number n which added to its sum of digits gives 78709960.

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, 10170 + ... + 16150.

It is an arithmetic number, because the mean of its divisors is an integer number (3230280).

Almost surely, 2^78709960 is an apocalyptic number.

78709960 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 78709960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103368960).

78709960 is an abundant number, since it is smaller than the sum of its proper divisors (128027960).

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

78709960 is a wasteful number, since it uses less digits than its factorization.

78709960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6046 (or 6042 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 78709960 is about 8871.8633893901. The cubic root of 78709960 is about 428.5582867928.

The spelling of 78709960 in words is "seventy-eight million, seven hundred nine thousand, nine hundred sixty".