305283128 has 16 divisors (see below), whose sum is σ = 576586080. Its totient is φ = 151526848.

The previous prime is 305283119. The next prime is 305283149. The reversal of 305283128 is 821382503.

It is a junction number, because it is equal to n+sod(n) for n = 305283094 and 305283103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138176 + ... + 140367.

It is an arithmetic number, because the mean of its divisors is an integer number (36036630).

Almost surely, 2^305283128 is an apocalyptic number.

It is an amenable number.

305283128 is a deficient number, since it is larger than the sum of its proper divisors (271302952).

305283128 is a wasteful number, since it uses less digits than its factorization.

305283128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278686 (or 278682 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 305283128 is about 17472.3532473448. The cubic root of 305283128 is about 673.3397720741.

The spelling of 305283128 in words is "three hundred five million, two hundred eighty-three thousand, one hundred twenty-eight".