73173856 has 72 divisors (see below), whose sum is σ = 174953520. Its totient is φ = 29981952.

The previous prime is 73173853. The next prime is 73173869. The reversal of 73173856 is 65837137.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73173851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35050 + ... + 37078.

It is an arithmetic number, because the mean of its divisors is an integer number (2429910).

Almost surely, 2^73173856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73173856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87476760).

73173856 is an abundant number, since it is smaller than the sum of its proper divisors (101779664).

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

73173856 is a wasteful number, since it uses less digits than its factorization.

73173856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2076 (or 2061 counting only the distinct ones).

The product of its digits is 105840, while the sum is 40.

The square root of 73173856 is about 8554.1718477010. The cubic root of 73173856 is about 418.2654388774.

The spelling of 73173856 in words is "seventy-three million, one hundred seventy-three thousand, eight hundred fifty-six".