73445273 has 16 divisors (see below), whose sum is σ = 81715200. Its totient is φ = 65454480.

The previous prime is 73445263. The next prime is 73445303. The reversal of 73445273 is 37254437.

It is a cyclic number.

It is not a de Polignac number, because 73445273 - 2⁸ = 73445017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73445263) 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 15 ways as a sum of consecutive naturals, for example, 193598 + ... + 193976.

It is an arithmetic number, because the mean of its divisors is an integer number (5107200).

Almost surely, 2^73445273 is an apocalyptic number.

It is an amenable number.

73445273 is a deficient number, since it is larger than the sum of its proper divisors (8269927).

73445273 is a wasteful number, since it uses less digits than its factorization.

73445273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692.

The product of its digits is 70560, while the sum is 35.

The square root of 73445273 is about 8570.0217619327. The cubic root of 73445273 is about 418.7819451979.

The spelling of 73445273 in words is "seventy-three million, four hundred forty-five thousand, two hundred seventy-three".