78730923 has 8 divisors (see below), whose sum is σ = 106057168. Its totient is φ = 51945984.

The previous prime is 78730907. The next prime is 78730937. The reversal of 78730923 is 32903787.

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

It is not a de Polignac number, because 78730923 - 2⁴ = 78730907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78730423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134986 + ... + 135567.

It is an arithmetic number, because the mean of its divisors is an integer number (13257146).

Almost surely, 2^78730923 is an apocalyptic number.

78730923 is a deficient number, since it is larger than the sum of its proper divisors (27326245).

78730923 is a wasteful number, since it uses less digits than its factorization.

78730923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270653.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 78730923 is about 8873.0447423644. The cubic root of 78730923 is about 428.5963297119.

The spelling of 78730923 in words is "seventy-eight million, seven hundred thirty thousand, nine hundred twenty-three".