303428081 has 24 divisors (see below), whose sum is σ = 357676704. Its totient is φ = 255104640.

The previous prime is 303428071. The next prime is 303428089. The reversal of 303428081 is 180824303.

It is a happy number.

It is not a de Polignac number, because 303428081 - 2⁶ = 303428017 is a prime.

It is a super-2 number, since 2×303428081² = 184137200678685122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (303428089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169865 + ... + 171641.

It is an arithmetic number, because the mean of its divisors is an integer number (14903196).

Almost surely, 2^303428081 is an apocalyptic number.

It is an amenable number.

303428081 is a deficient number, since it is larger than the sum of its proper divisors (54248623).

303428081 is a wasteful number, since it uses less digits than its factorization.

303428081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869 (or 1850 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 303428081 is about 17419.1871509551. The cubic root of 303428081 is about 671.9731549001.

The spelling of 303428081 in words is "three hundred three million, four hundred twenty-eight thousand, eighty-one".