78057934 has 8 divisors (see below), whose sum is σ = 117126360. Its totient is φ = 39015816.

The previous prime is 78057919. The next prime is 78057977. The reversal of 78057934 is 43975087.

It is a happy number.

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

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, 4732 + ... + 13360.

It is an arithmetic number, because the mean of its divisors is an integer number (14640795).

Almost surely, 2^78057934 is an apocalyptic number.

78057934 is a deficient number, since it is larger than the sum of its proper divisors (39068426).

78057934 is a wasteful number, since it uses less digits than its factorization.

78057934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13154.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 78057934 is about 8835.0401244137. The cubic root of 78057934 is about 427.3716249856.

The spelling of 78057934 in words is "seventy-eight million, fifty-seven thousand, nine hundred thirty-four".