78431296 has 28 divisors (see below), whose sum is σ = 158282640. Its totient is φ = 38549120.

The previous prime is 78431293. The next prime is 78431303. The reversal of 78431296 is 69213487.

It is not an unprimeable number, because it can be changed into a prime (78431291) 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, 6610 + ... + 14161.

Almost surely, 2^78431296 is an apocalyptic number.

It is an amenable number.

78431296 is an abundant number, since it is smaller than the sum of its proper divisors (79851344).

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

78431296 is a wasteful number, since it uses less digits than its factorization.

78431296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20842 (or 20832 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 78431296 is about 8856.1445335993. The cubic root of 78431296 is about 428.0519341877.

The spelling of 78431296 in words is "seventy-eight million, four hundred thirty-one thousand, two hundred ninety-six".