73043745 has 32 divisors (see below), whose sum is σ = 122694912. Its totient is φ = 37036032.

The previous prime is 73043743. The next prime is 73043753. The reversal of 73043745 is 54734037.

It is not a de Polignac number, because 73043745 - 2¹ = 73043743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73043741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66037 + ... + 67133.

It is an arithmetic number, because the mean of its divisors is an integer number (3834216).

Almost surely, 2^73043745 is an apocalyptic number.

It is an amenable number.

73043745 is a deficient number, since it is larger than the sum of its proper divisors (49651167).

73043745 is a wasteful number, since it uses less digits than its factorization.

73043745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321.

The product of its (nonzero) digits is 35280, while the sum is 33.

The square root of 73043745 is about 8546.5633444093. The cubic root of 73043745 is about 418.0173847916.

The spelling of 73043745 in words is "seventy-three million, forty-three thousand, seven hundred forty-five".