78450723 has 24 divisors (see below), whose sum is σ = 127344672. Its totient is φ = 46176768.

The previous prime is 78450689. The next prime is 78450781. The reversal of 78450723 is 32705487.

It is not a de Polignac number, because 78450723 - 2¹³ = 78442531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78450623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11886 + ... + 17267.

It is an arithmetic number, because the mean of its divisors is an integer number (5306028).

Almost surely, 2^78450723 is an apocalyptic number.

78450723 is a deficient number, since it is larger than the sum of its proper divisors (48893949).

78450723 is a wasteful number, since it uses less digits than its factorization.

78450723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29195 (or 29192 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 78450723 is about 8857.2412747988. The cubic root of 78450723 is about 428.0872733055.

The spelling of 78450723 in words is "seventy-eight million, four hundred fifty thousand, seven hundred twenty-three".