78748243 has 6 divisors (see below), whose sum is σ = 91605156. Its totient is φ = 67498452.

The previous prime is 78748223. The next prime is 78748261. The reversal of 78748243 is 34284787.

It is not a de Polignac number, because 78748243 - 2⁵ = 78748211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78748243.

It is not an unprimeable number, because it can be changed into a prime (78748223) 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 5 ways as a sum of consecutive naturals, for example, 803505 + ... + 803602.

It is an arithmetic number, because the mean of its divisors is an integer number (15267526).

Almost surely, 2^78748243 is an apocalyptic number.

78748243 is a deficient number, since it is larger than the sum of its proper divisors (12856913).

78748243 is a wasteful number, since it uses less digits than its factorization.

78748243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607121 (or 1607114 counting only the distinct ones).

The product of its digits is 301056, while the sum is 43.

The square root of 78748243 is about 8874.0206783622. The cubic root of 78748243 is about 428.6277563478.

The spelling of 78748243 in words is "seventy-eight million, seven hundred forty-eight thousand, two hundred forty-three".