1305430 has 32 divisors (see below), whose sum is σ = 2846016. Its totient is φ = 420864.

The previous prime is 1305427. The next prime is 1305431. The reversal of 1305430 is 345031.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 642 + ... + 1738.

It is an arithmetic number, because the mean of its divisors is an integer number (88938).

2^1305430 is an apocalyptic number.

1305430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1305430 is an abundant number, since it is smaller than the sum of its proper divisors (1540586).

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

1305430 is a wasteful number, since it uses less digits than its factorization.

1305430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 1305430 is about 1142.5541562657. The cubic root of 1305430 is about 109.2910326976.

The spelling of 1305430 in words is "one million, three hundred five thousand, four hundred thirty".