78788860 has 12 divisors (see below), whose sum is σ = 165456648. Its totient is φ = 31515536.

The previous prime is 78788849. The next prime is 78788867. The reversal of 78788860 is 6888787.

It is a junction number, because it is equal to n+sod(n) for n = 78788798 and 78788807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78788867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1969702 + ... + 1969741.

It is an arithmetic number, because the mean of its divisors is an integer number (13788054).

Almost surely, 2^78788860 is an apocalyptic number.

It is an amenable number.

78788860 is an abundant number, since it is smaller than the sum of its proper divisors (86667788).

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

78788860 is a wasteful number, since it uses less digits than its factorization.

78788860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939452 (or 3939450 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 52.

The square root of 78788860 is about 8876.3089175625. The cubic root of 78788860 is about 428.7014366424.

The spelling of 78788860 in words is "seventy-eight million, seven hundred eighty-eight thousand, eight hundred sixty".