78545378 has 8 divisors (see below), whose sum is σ = 117873360. Its totient is φ = 39254260.

The previous prime is 78545359. The next prime is 78545387. The reversal of 78545378 is 87354587.

It is a happy number.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3068 + ... + 12903.

It is an arithmetic number, because the mean of its divisors is an integer number (14734170).

Almost surely, 2^78545378 is an apocalyptic number.

78545378 is a deficient number, since it is larger than the sum of its proper divisors (39327982).

78545378 is a wasteful number, since it uses less digits than its factorization.

78545378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18432.

The product of its digits is 940800, while the sum is 47.

The square root of 78545378 is about 8862.5830320511. The cubic root of 78545378 is about 428.2593741839.

The spelling of 78545378 in words is "seventy-eight million, five hundred forty-five thousand, three hundred seventy-eight".