78842746 has 8 divisors (see below), whose sum is σ = 119115360. Its totient is φ = 39137628.

The previous prime is 78842741. The next prime is 78842759. The reversal of 78842746 is 64724887.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 78842696 and 78842705.

It is not an unprimeable number, because it can be changed into a prime (78842741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141526 + ... + 142081.

It is an arithmetic number, because the mean of its divisors is an integer number (14889420).

Almost surely, 2^78842746 is an apocalyptic number.

78842746 is a deficient number, since it is larger than the sum of its proper divisors (40272614).

78842746 is a wasteful number, since it uses less digits than its factorization.

78842746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283748.

The product of its digits is 602112, while the sum is 46.

The square root of 78842746 is about 8879.3437820596. The cubic root of 78842746 is about 428.7991481765.

It can be divided in two parts, 788 and 42746, that added together give a palindrome (43534).

The spelling of 78842746 in words is "seventy-eight million, eight hundred forty-two thousand, seven hundred forty-six".