73423445 has 8 divisors (see below), whose sum is σ = 88888536. Its totient is φ = 58218496.

The previous prime is 73423439. The next prime is 73423451. The reversal of 73423445 is 54432437.

It is an interprime number because it is at equal distance from previous prime (73423439) and next prime (73423451).

It can be written as a sum of positive squares in 4 ways, for example, as 47089 + 73376356 = 217^2 + 8566^2 .

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 73423445 - 2¹⁰ = 73422421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 64412 + ... + 65541.

It is an arithmetic number, because the mean of its divisors is an integer number (11111067).

Almost surely, 2^73423445 is an apocalyptic number.

It is an amenable number.

73423445 is a deficient number, since it is larger than the sum of its proper divisors (15465091).

73423445 is a wasteful number, since it uses less digits than its factorization.

73423445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130071.

The product of its digits is 40320, while the sum is 32.

The square root of 73423445 is about 8568.7481582784. The cubic root of 73423445 is about 418.7404536325.

The spelling of 73423445 in words is "seventy-three million, four hundred twenty-three thousand, four hundred forty-five".