228204613 has 24 divisors (see below), whose sum is σ = 290203872. Its totient is φ = 177829344.

The previous prime is 228204607. The next prime is 228204623. The reversal of 228204613 is 316402822.

It is a de Polignac number, because none of the positive numbers 2^k-228204613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228204623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40006 + ... + 45352.

It is an arithmetic number, because the mean of its divisors is an integer number (12091828).

Almost surely, 2^228204613 is an apocalyptic number.

It is an amenable number.

228204613 is a deficient number, since it is larger than the sum of its proper divisors (61999259).

228204613 is a wasteful number, since it uses less digits than its factorization.

228204613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5441 (or 5434 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 228204613 is about 15106.4427645955. The cubic root of 228204613 is about 611.0941689542.

The spelling of 228204613 in words is "two hundred twenty-eight million, two hundred four thousand, six hundred thirteen".