78861060 has 96 divisors (see below), whose sum is σ = 252040320. Its totient is φ = 20456064.

The previous prime is 78861053. The next prime is 78861073. The reversal of 78861060 is 6016887.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 18007 + ... + 21953.

It is an arithmetic number, because the mean of its divisors is an integer number (2625420).

Almost surely, 2^78861060 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 78861060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126020160).

78861060 is an abundant number, since it is smaller than the sum of its proper divisors (173179260).

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

78861060 is a wasteful number, since it uses less digits than its factorization.

78861060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002 (or 3994 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 78861060 is about 8880.3749920823. The cubic root of 78861060 is about 428.8323468326.

The spelling of 78861060 in words is "seventy-eight million, eight hundred sixty-one thousand, sixty".