305343432 has 40 divisors (see below), whose sum is σ = 855246150. Its totient is φ = 101780928.

The previous prime is 305343431. The next prime is 305343457. The reversal of 305343432 is 234343503.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 296735076 + 8608356 = 17226^2 + 2934^2 .

It is a super-2 number, since 2×305343432² = 186469222931077248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 305343396 and 305343405.

It is not an unprimeable number, because it can be changed into a prime (305343431) 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 9 ways as a sum of consecutive naturals, for example, 234957 + ... + 236252.

Almost surely, 2^305343432 is an apocalyptic number.

It is an amenable number.

305343432 is an abundant number, since it is smaller than the sum of its proper divisors (549902718).

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

305343432 is a wasteful number, since it uses less digits than its factorization.

305343432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471227 (or 471214 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 27.

The square root of 305343432 is about 17474.0788598427. The cubic root of 305343432 is about 673.3841051369.

Adding to 305343432 its reverse (234343503), we get a palindrome (539686935).

The spelling of 305343432 in words is "three hundred five million, three hundred forty-three thousand, four hundred thirty-two".