305049 has 8 divisors (see below), whose sum is σ = 424512. Its totient is φ = 194480.

The previous prime is 305047. The next prime is 305069. The reversal of 305049 is 940503.

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

It is a cyclic number.

It is not a de Polignac number, because 305049 - 2¹ = 305047 is a prime.

305049 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (305047) 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, 2142 + ... + 2279.

It is an arithmetic number, because the mean of its divisors is an integer number (53064).

2³⁰⁵⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

305049 is a deficient number, since it is larger than the sum of its proper divisors (119463).

305049 is a wasteful number, since it uses less digits than its factorization.

305049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4447.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 305049 is about 552.3124115933. The cubic root of 305049 is about 67.3167595278.

The spelling of 305049 in words is "three hundred five thousand, forty-nine".