228032613 has 12 divisors (see below), whose sum is σ = 329654988. Its totient is φ = 151895040.

The previous prime is 228032587. The next prime is 228032641. The reversal of 228032613 is 316230822.

It can be written as a sum of positive squares in 2 ways, for example, as 55845729 + 172186884 = 7473^2 + 13122^2 .

It is not a de Polignac number, because 228032613 - 2⁶ = 228032549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228032653) 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 11 ways as a sum of consecutive naturals, for example, 1573 + ... + 21413.

It is an arithmetic number, because the mean of its divisors is an integer number (27471249).

Almost surely, 2^228032613 is an apocalyptic number.

It is an amenable number.

228032613 is a deficient number, since it is larger than the sum of its proper divisors (101622375).

228032613 is a wasteful number, since it uses less digits than its factorization.

228032613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21124 (or 21121 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 228032613 is about 15100.7487562703. The cubic root of 228032613 is about 610.9406011922.

The spelling of 228032613 in words is "two hundred twenty-eight million, thirty-two thousand, six hundred thirteen".