73143745 has 16 divisors (see below), whose sum is σ = 89026560. Its totient is φ = 57685824.

The previous prime is 73143743. The next prime is 73143751. The reversal of 73143745 is 54734137.

It is a cyclic number.

It is not a de Polignac number, because 73143745 - 2¹ = 73143743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73143745.

It is not an unprimeable number, because it can be changed into a prime (73143743) 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 15 ways as a sum of consecutive naturals, for example, 145164 + ... + 145666.

It is an arithmetic number, because the mean of its divisors is an integer number (5564160).

Almost surely, 2^73143745 is an apocalyptic number.

It is an amenable number.

73143745 is a deficient number, since it is larger than the sum of its proper divisors (15882815).

73143745 is a wasteful number, since it uses less digits than its factorization.

73143745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864.

The product of its digits is 35280, while the sum is 34.

The square root of 73143745 is about 8552.4116481844. The cubic root of 73143745 is about 418.2080590095.

The spelling of 73143745 in words is "seventy-three million, one hundred forty-three thousand, seven hundred forty-five".