78355078 has 8 divisors (see below), whose sum is σ = 118254168. Its totient is φ = 38937024.

The previous prime is 78355051. The next prime is 78355097. The reversal of 78355078 is 87055387.

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

It is a super-2 number, since 2×78355078² = 12279036496772168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 119851 + ... + 120502.

It is an arithmetic number, because the mean of its divisors is an integer number (14781771).

Almost surely, 2^78355078 is an apocalyptic number.

78355078 is a deficient number, since it is larger than the sum of its proper divisors (39899090).

78355078 is a wasteful number, since it uses less digits than its factorization.

78355078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240518.

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 78355078 is about 8851.8403736172. The cubic root of 78355078 is about 427.9132317483.

The spelling of 78355078 in words is "seventy-eight million, three hundred fifty-five thousand, seventy-eight".