78872323 has 4 divisors (see below), whose sum is σ = 78976728. Its totient is φ = 78767920.

The previous prime is 78872317. The next prime is 78872341. The reversal of 78872323 is 32327887.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32327887 = 4759 ⋅6793.

It is a cyclic number.

It is not a de Polignac number, because 78872323 - 2¹⁷ = 78741251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78872303) 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, 51061 + ... + 52582.

It is an arithmetic number, because the mean of its divisors is an integer number (19744182).

Almost surely, 2^78872323 is an apocalyptic number.

78872323 is a deficient number, since it is larger than the sum of its proper divisors (104405).

78872323 is a wasteful number, since it uses less digits than its factorization.

78872323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104404.

The product of its digits is 112896, while the sum is 40.

The square root of 78872323 is about 8881.0091205898. The cubic root of 78872323 is about 428.8527612543.

The spelling of 78872323 in words is "seventy-eight million, eight hundred seventy-two thousand, three hundred twenty-three".