305073 has 8 divisors (see below), whose sum is σ = 452000. Its totient is φ = 203364.

The previous prime is 305069. The next prime is 305093. The reversal of 305073 is 370503.

It is not a de Polignac number, because 305073 - 2² = 305069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (305023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5623 + ... + 5676.

It is an arithmetic number, because the mean of its divisors is an integer number (56500).

2³⁰⁵⁰⁷³ is an apocalyptic number.

It is an amenable number.

305073 is a deficient number, since it is larger than the sum of its proper divisors (146927).

305073 is a wasteful number, since it uses less digits than its factorization.

305073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11308 (or 11302 counting only the distinct ones).

The product of its (nonzero) digits is 315, while the sum is 18.

The square root of 305073 is about 552.3341379998. The cubic root of 305073 is about 67.3185248834.

Adding to 305073 its reverse (370503), we get a palindrome (675576).

The spelling of 305073 in words is "three hundred five thousand, seventy-three".