228474909 has 24 divisors (see below), whose sum is σ = 358874880. Its totient is φ = 139227552.

The previous prime is 228474877. The next prime is 228474913. The reversal of 228474909 is 909474822.

It is not a de Polignac number, because 228474909 - 2⁵ = 228474877 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228474959) 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 23 ways as a sum of consecutive naturals, for example, 2572 + ... + 21530.

It is an arithmetic number, because the mean of its divisors is an integer number (14953120).

Almost surely, 2^228474909 is an apocalyptic number.

It is an amenable number.

228474909 is a deficient number, since it is larger than the sum of its proper divisors (130399971).

228474909 is a wasteful number, since it uses less digits than its factorization.

228474909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19081 (or 19078 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 228474909 is about 15115.3864985319. The cubic root of 228474909 is about 611.3353430714.

The spelling of 228474909 in words is "two hundred twenty-eight million, four hundred seventy-four thousand, nine hundred nine".