228887013 has 4 divisors (see below), whose sum is σ = 305182688. Its totient is φ = 152591340.

The previous prime is 228886993. The next prime is 228887041. The reversal of 228887013 is 310788822.

228887013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 228887013 - 2⁶ = 228886949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228887083) 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, 38147833 + ... + 38147838.

It is an arithmetic number, because the mean of its divisors is an integer number (76295672).

Almost surely, 2^228887013 is an apocalyptic number.

It is an amenable number.

228887013 is a deficient number, since it is larger than the sum of its proper divisors (76295675).

228887013 is an equidigital number, since it uses as much as digits as its factorization.

228887013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76295674.

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 228887013 is about 15129.0122942643. The cubic root of 228887013 is about 611.7026808834.

The spelling of 228887013 in words is "two hundred twenty-eight million, eight hundred eighty-seven thousand, thirteen".