305432 has 16 divisors (see below), whose sum is σ = 581640. Its totient is φ = 150336.

The previous prime is 305423. The next prime is 305441. The reversal of 305432 is 234503.

It is an interprime number because it is at equal distance from previous prime (305423) and next prime (305441).

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

It is a self number, because there is not a number n which added to its sum of digits gives 305432.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323 + ... + 845.

2³⁰⁵⁴³² is an apocalyptic number.

It is an amenable number.

305432 is a deficient number, since it is larger than the sum of its proper divisors (276208).

305432 is a wasteful number, since it uses less digits than its factorization.

305432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 305432 is about 552.6590268873. The cubic root of 305432 is about 67.3449206169.

Adding to 305432 its reverse (234503), we get a palindrome (539935).

It can be divided in two parts, 305 and 432, that added together give a palindrome (737).

The spelling of 305432 in words is "three hundred five thousand, four hundred thirty-two".