73045209 has 16 divisors (see below), whose sum is σ = 104666688. Its totient is φ = 45146112.

The previous prime is 73045169. The next prime is 73045213. The reversal of 73045209 is 90254037.

It is not a de Polignac number, because 73045209 - 2⁷ = 73045081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73045409) 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, 7272 + ... + 14105.

It is an arithmetic number, because the mean of its divisors is an integer number (6541668).

Almost surely, 2^73045209 is an apocalyptic number.

It is an amenable number.

73045209 is a deficient number, since it is larger than the sum of its proper divisors (31621479).

73045209 is a wasteful number, since it uses less digits than its factorization.

73045209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21464.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 73045209 is about 8546.6489924414. The cubic root of 73045209 is about 418.0201775170.

The spelling of 73045209 in words is "seventy-three million, forty-five thousand, two hundred nine".