78057845 has 8 divisors (see below), whose sum is σ = 96691200. Its totient is φ = 60431760.

The previous prime is 78057841. The next prime is 78057851. The reversal of 78057845 is 54875087.

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

It is not a de Polignac number, because 78057845 - 2² = 78057841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78057796 and 78057805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78057841) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 251645 + ... + 251954.

It is an arithmetic number, because the mean of its divisors is an integer number (12086400).

Almost surely, 2^78057845 is an apocalyptic number.

It is an amenable number.

78057845 is a deficient number, since it is larger than the sum of its proper divisors (18633355).

78057845 is a wasteful number, since it uses less digits than its factorization.

78057845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503635.

The product of its (nonzero) digits is 313600, while the sum is 44.

The square root of 78057845 is about 8835.0350876496. The cubic root of 78057845 is about 427.3714625589.

The spelling of 78057845 in words is "seventy-eight million, fifty-seven thousand, eight hundred forty-five".