73047145 has 8 divisors (see below), whose sum is σ = 88073280. Its totient is φ = 58159920.

The previous prime is 73047127. The next prime is 73047157. The reversal of 73047145 is 54174037.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-73047145 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 33565 + ... + 35674.

It is an arithmetic number, because the mean of its divisors is an integer number (11009160).

Almost surely, 2^73047145 is an apocalyptic number.

It is an amenable number.

73047145 is a deficient number, since it is larger than the sum of its proper divisors (15026135).

73047145 is a wasteful number, since it uses less digits than its factorization.

73047145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69455.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 73047145 is about 8546.7622524556. The cubic root of 73047145 is about 418.0238705720.

The spelling of 73047145 in words is "seventy-three million, forty-seven thousand, one hundred forty-five".