228830513 has 4 divisors (see below), whose sum is σ = 228948468. Its totient is φ = 228712560.

The previous prime is 228830507. The next prime is 228830551. The reversal of 228830513 is 315038822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72880369 + 155950144 = 8537^2 + 12488^2 .

It is a cyclic number.

It is not a de Polignac number, because 228830513 - 2¹⁴ = 228814129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 228830513.

It is not an unprimeable number, because it can be changed into a prime (228830113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56018 + ... + 59963.

It is an arithmetic number, because the mean of its divisors is an integer number (57237117).

Almost surely, 2^228830513 is an apocalyptic number.

It is an amenable number.

228830513 is a deficient number, since it is larger than the sum of its proper divisors (117955).

228830513 is a wasteful number, since it uses less digits than its factorization.

228830513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117954.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 228830513 is about 15127.1449057646. The cubic root of 228830513 is about 611.6523444821.

The spelling of 228830513 in words is "two hundred twenty-eight million, eight hundred thirty thousand, five hundred thirteen".