73257347 has 4 divisors (see below), whose sum is σ = 73285440. Its totient is φ = 73229256.

The previous prime is 73257341. The next prime is 73257383. The reversal of 73257347 is 74375237.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73257347 - 2¹⁴ = 73240963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73257347.

It is not an unprimeable number, because it can be changed into a prime (73257341) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9683 + ... + 15500.

It is an arithmetic number, because the mean of its divisors is an integer number (18321360).

Almost surely, 2^73257347 is an apocalyptic number.

73257347 is a deficient number, since it is larger than the sum of its proper divisors (28093).

73257347 is a wasteful number, since it uses less digits than its factorization.

73257347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28092.

The product of its digits is 123480, while the sum is 38.

The square root of 73257347 is about 8559.0505898727. The cubic root of 73257347 is about 418.4244579969.

The spelling of 73257347 in words is "seventy-three million, two hundred fifty-seven thousand, three hundred forty-seven".