78781104 has 60 divisors (see below), whose sum is σ = 222581736. Its totient is φ = 26009856.

The previous prime is 78781097. The next prime is 78781121. The reversal of 78781104 is 40118787.

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 11 ways as a sum of consecutive naturals, for example, 12852 + ... + 17964.

Almost surely, 2^78781104 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 78781104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111290868).

78781104 is an abundant number, since it is smaller than the sum of its proper divisors (143800632).

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

78781104 is a wasteful number, since it uses less digits than its factorization.

78781104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5234 (or 5225 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 78781104 is about 8875.8720134982. The cubic root of 78781104 is about 428.6873690130.

The spelling of 78781104 in words is "seventy-eight million, seven hundred eighty-one thousand, one hundred four".