305144432 has 20 divisors (see below), whose sum is σ = 597074136. Its totient is φ = 151060800.

The previous prime is 305144431. The next prime is 305144459. The reversal of 305144432 is 234441503.

It is a super-2 number, since 2×305144432² = 186226248761205248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305144431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92798 + ... + 96029.

Almost surely, 2^305144432 is an apocalyptic number.

It is an amenable number.

305144432 is a deficient number, since it is larger than the sum of its proper divisors (291929704).

305144432 is a wasteful number, since it uses less digits than its factorization.

305144432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188936 (or 188930 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 305144432 is about 17468.3837832812. The cubic root of 305144432 is about 673.2377862223.

Adding to 305144432 its reverse (234441503), we get a palindrome (539585935).

The spelling of 305144432 in words is "three hundred five million, one hundred forty-four thousand, four hundred thirty-two".