78057834 has 8 divisors (see below), whose sum is σ = 156115680. Its totient is φ = 26019276.

The previous prime is 78057797. The next prime is 78057841. The reversal of 78057834 is 43875087.

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

78057834 is an admirable 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, 6504814 + ... + 6504825.

It is an arithmetic number, because the mean of its divisors is an integer number (19514460).

Almost surely, 2^78057834 is an apocalyptic number.

78057834 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78057834 is a wasteful number, since it uses less digits than its factorization.

78057834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13009644.

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 78057834 is about 8835.0344651280. The cubic root of 78057834 is about 427.3714424836.

The spelling of 78057834 in words is "seventy-eight million, fifty-seven thousand, eight hundred thirty-four".