78936346 has 4 divisors (see below), whose sum is σ = 118404522. Its totient is φ = 39468172.

The previous prime is 78936343. The next prime is 78936349. The reversal of 78936346 is 64363987.

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

It is an interprime number because it is at equal distance from previous prime (78936343) and next prime (78936349).

It can be written as a sum of positive squares in only one way, i.e., 69906321 + 9030025 = 8361^2 + 3005^2 .

It is a junction number, because it is equal to n+sod(n) for n = 78936296 and 78936305.

It is not an unprimeable number, because it can be changed into a prime (78936343) 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 as a sum of consecutive naturals, namely, 19734085 + ... + 19734088.

Almost surely, 2^78936346 is an apocalyptic number.

78936346 is a deficient number, since it is larger than the sum of its proper divisors (39468176).

78936346 is a wasteful number, since it uses less digits than its factorization.

78936346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39468175.

The product of its digits is 653184, while the sum is 46.

The square root of 78936346 is about 8884.6128784545. The cubic root of 78936346 is about 428.9687673663.

The spelling of 78936346 in words is "seventy-eight million, nine hundred thirty-six thousand, three hundred forty-six".