305430 has 16 divisors (see below), whose sum is σ = 733104. Its totient is φ = 81440.

The previous prime is 305423. The next prime is 305441. The reversal of 305430 is 34503.

It is a Harshad number since it is a multiple of its sum of digits (15).

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

It is a congruent number.

It is an unprimeable number.

305430 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5061 + ... + 5120.

It is an arithmetic number, because the mean of its divisors is an integer number (45819).

2³⁰⁵⁴³⁰ is an apocalyptic number.

305430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

305430 is an abundant number, since it is smaller than the sum of its proper divisors (427674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

305430 is a wasteful number, since it uses less digits than its factorization.

305430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10191.

The product of its (nonzero) digits is 180, while the sum is 15.

The square root of 305430 is about 552.6572174504. The cubic root of 305430 is about 67.3447736228.

Adding to 305430 its reverse (34503), we get a palindrome (339933).

It can be divided in two parts, 30 and 5430, that added together give a triangular number (5460 = T₁₀₄).

The spelling of 305430 in words is "three hundred five thousand, four hundred thirty".