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228877 = 1120807
BaseRepresentation
bin110111111000001101
3102121221221
4313320031
524311002
64523341
71642165
oct677015
9377857
10228877
11146a60
12b0551
138023c
145d5a5
1547c37
hex37e0d

228877 has 4 divisors (see below), whose sum is σ = 249696. Its totient is φ = 208060.

The previous prime is 228869. The next prime is 228881. The reversal of 228877 is 778822.

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 a cyclic number.

It is not a de Polignac number, because 228877 - 23 = 228869 is a prime.

It is a super-2 number, since 2×2288772 = 104769362258, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228847) 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 3 ways as a sum of consecutive naturals, for example, 10393 + ... + 10414.

It is an arithmetic number, because the mean of its divisors is an integer number (62424).

2228877 is an apocalyptic number.

It is an amenable number.

228877 is a deficient number, since it is larger than the sum of its proper divisors (20819).

228877 is a wasteful number, since it uses less digits than its factorization.

228877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20818.

The product of its digits is 12544, while the sum is 34.

The square root of 228877 is about 478.4109112468. The cubic root of 228877 is about 61.1693760808.

Subtracting 228877 from its reverse (778822), we obtain a palindrome (549945).

The spelling of 228877 in words is "two hundred twenty-eight thousand, eight hundred seventy-seven".

Divisors: 1 11 20807 228877