73222445 has 16 divisors (see below), whose sum is σ = 90852528. Its totient is φ = 56609280.

The previous prime is 73222427. The next prime is 73222453. The reversal of 73222445 is 54422237.

It can be written as a sum of positive squares in 8 ways, for example, as 7628644 + 65593801 = 2762^2 + 8099^2 .

It is not a de Polignac number, because 73222445 - 2⁸ = 73222189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 27785 + ... + 30305.

It is an arithmetic number, because the mean of its divisors is an integer number (5678283).

Almost surely, 2^73222445 is an apocalyptic number.

It is an amenable number.

73222445 is a deficient number, since it is larger than the sum of its proper divisors (17630083).

73222445 is a wasteful number, since it uses less digits than its factorization.

73222445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720.

The product of its digits is 13440, while the sum is 29.

The square root of 73222445 is about 8557.0114526042. The cubic root of 73222445 is about 418.3579974488.

The spelling of 73222445 in words is "seventy-three million, two hundred twenty-two thousand, four hundred forty-five".