78734112 has 48 divisors (see below), whose sum is σ = 209778912. Its totient is φ = 25850880.

The previous prime is 78734111. The next prime is 78734137. The reversal of 78734112 is 21143787.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (78734111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312 + ... + 12552.

It is an arithmetic number, because the mean of its divisors is an integer number (4370394).

Almost surely, 2^78734112 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 78734112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104889456).

78734112 is an abundant number, since it is smaller than the sum of its proper divisors (131044800).

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

78734112 is a wasteful number, since it uses less digits than its factorization.

78734112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12321 (or 12313 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 78734112 is about 8873.2244421067. The cubic root of 78734112 is about 428.6021164057.

Adding to 78734112 its reverse (21143787), we get a palindrome (99877899).

The spelling of 78734112 in words is "seventy-eight million, seven hundred thirty-four thousand, one hundred twelve".