305470 has 16 divisors (see below), whose sum is σ = 600048. Its totient is φ = 111040.

The previous prime is 305449. The next prime is 305471. The reversal of 305470 is 74503.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305471) 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, 1279 + ... + 1498.

It is an arithmetic number, because the mean of its divisors is an integer number (37503).

2³⁰⁵⁴⁷⁰ is an apocalyptic number.

305470 is a deficient number, since it is larger than the sum of its proper divisors (294578).

305470 is a wasteful number, since it uses less digits than its factorization.

305470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 305470 is about 552.6934050629. The cubic root of 305470 is about 67.3477133835.

Adding to 305470 its reverse (74503), we get a palindrome (379973).

The spelling of 305470 in words is "three hundred five thousand, four hundred seventy".