304873 has 4 divisors (see below), whose sum is σ = 307780. Its totient is φ = 301968.

The previous prime is 304867. The next prime is 304879. The reversal of 304873 is 378403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 378403 = 17 ⋅22259.

It is an interprime number because it is at equal distance from previous prime (304867) and next prime (304879).

It can be written as a sum of positive squares in 2 ways, for example, as 219024 + 85849 = 468^2 + 293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304873 is a prime.

It is a super-2 number, since 2×304873² = 185895092258, which contains 22 as substring.

It is a Duffinian number.

304873 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (304879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1290 + ... + 1507.

It is an arithmetic number, because the mean of its divisors is an integer number (76945).

2³⁰⁴⁸⁷³ is an apocalyptic number.

It is an amenable number.

304873 is a deficient number, since it is larger than the sum of its proper divisors (2907).

304873 is a wasteful number, since it uses less digits than its factorization.

304873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 304873 is about 552.1530584901. The cubic root of 304873 is about 67.3038107568.

The spelling of 304873 in words is "three hundred four thousand, eight hundred seventy-three".