78057073 has 8 divisors (see below), whose sum is σ = 82340000. Its totient is φ = 73791648.

The previous prime is 78057061. The next prime is 78057107. The reversal of 78057073 is 37075087.

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

It is a cyclic number.

It is not a de Polignac number, because 78057073 - 2⁵ = 78057041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78057053) 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, 5365 + ... + 13597.

It is an arithmetic number, because the mean of its divisors is an integer number (10292500).

Almost surely, 2^78057073 is an apocalyptic number.

It is an amenable number.

78057073 is a deficient number, since it is larger than the sum of its proper divisors (4282927).

78057073 is a wasteful number, since it uses less digits than its factorization.

78057073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8751.

The product of its (nonzero) digits is 41160, while the sum is 37.

The square root of 78057073 is about 8834.9913978453. The cubic root of 78057073 is about 427.3700536385.

It can be divided in two parts, 7805 and 7073, that added together give a triangular number (14878 = T₁₇₂).

The spelling of 78057073 in words is "seventy-eight million, fifty-seven thousand, seventy-three".