78734 has 4 divisors (see below), whose sum is σ = 118104. Its totient is φ = 39366.

The previous prime is 78721. The next prime is 78737. The reversal of 78734 is 43787.

78734 = 161² + 162² + 163².

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 78697 and 78706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19682 + ... + 19685.

It is an arithmetic number, because the mean of its divisors is an integer number (29526).

2⁷⁸⁷³⁴ is an apocalyptic number.

78734 is a deficient number, since it is larger than the sum of its proper divisors (39370).

78734 is a wasteful number, since it uses less digits than its factorization.

78734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39369.

The product of its digits is 4704, while the sum is 29.

The square root of 78734 is about 280.5957946941. The cubic root of 78734 is about 42.8601913175.

Adding to 78734 its product of digits (4704), we get a palindrome (83438).

The spelling of 78734 in words is "seventy-eight thousand, seven hundred thirty-four".