78519714 has 64 divisors (see below), whose sum is σ = 199557120. Its totient is φ = 20036160.

The previous prime is 78519713. The next prime is 78519731. The reversal of 78519714 is 41791587.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78519713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14607 + ... + 19245.

It is an arithmetic number, because the mean of its divisors is an integer number (3118080).

Almost surely, 2^78519714 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78519714, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99778560).

78519714 is an abundant number, since it is smaller than the sum of its proper divisors (121037406).

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

78519714 is a wasteful number, since it uses less digits than its factorization.

78519714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4695.

The product of its digits is 70560, while the sum is 42.

The square root of 78519714 is about 8861.1350288775. The cubic root of 78519714 is about 428.2127257957.

The spelling of 78519714 in words is "seventy-eight million, five hundred nineteen thousand, seven hundred fourteen".