Search a number
-
+
228255356 = 22731972711
BaseRepresentation
bin11011001101011…
…10011001111100
3120220111120111002
431212232121330
5431413132411
634352145432
75441065340
oct1546563174
9526446432
10228255356
1110793169a
1264538278
133839b154
1422459620
151508b33b
hexd9ae67c

228255356 has 48 divisors (see below), whose sum is σ = 476270592. Its totient is φ = 93657600.

The previous prime is 228255347. The next prime is 228255371. The reversal of 228255356 is 653552822.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82841 + ... + 85551.

It is an arithmetic number, because the mean of its divisors is an integer number (9922304).

Almost surely, 2228255356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228255356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238135296).

228255356 is an abundant number, since it is smaller than the sum of its proper divisors (248015236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228255356 is a wasteful number, since it uses less digits than its factorization.

228255356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2850 (or 2848 counting only the distinct ones).

The product of its digits is 144000, while the sum is 38.

The square root of 228255356 is about 15108.1221864267. The cubic root of 228255356 is about 611.1394593816.

The spelling of 228255356 in words is "two hundred twenty-eight million, two hundred fifty-five thousand, three hundred fifty-six".

Divisors: 1 2 4 7 14 28 31 62 97 124 194 217 388 434 679 868 1358 2711 2716 3007 5422 6014 10844 12028 18977 21049 37954 42098 75908 84041 84196 168082 262967 336164 525934 588287 1051868 1176574 1840769 2353148 3681538 7363076 8151977 16303954 32607908 57063839 114127678 228255356