228303009 has 32 divisors (see below), whose sum is σ = 370231680. Its totient is φ = 137894400.

The previous prime is 228302999. The next prime is 228303029. The reversal of 228303009 is 900303822.

It is not a de Polignac number, because 228303009 - 2⁷ = 228302881 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228303029) 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 31 ways as a sum of consecutive naturals, for example, 98949 + ... + 101229.

It is an arithmetic number, because the mean of its divisors is an integer number (11569740).

Almost surely, 2^228303009 is an apocalyptic number.

It is an amenable number.

228303009 is a deficient number, since it is larger than the sum of its proper divisors (141928671).

228303009 is a wasteful number, since it uses less digits than its factorization.

228303009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2638 (or 2632 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 228303009 is about 15109.6991697386. The cubic root of 228303009 is about 611.1819857327.

The spelling of 228303009 in words is "two hundred twenty-eight million, three hundred three thousand, nine".