Search a number
-
+
228144830 = 2561936857
BaseRepresentation
bin11011001100100…
…11011010111110
3120220021221212112
431212103122332
5431401113310
634345534022
75440125164
oct1546233276
9526257775
10228144830
11107866651
12644a4312
133835ca54
142242b234
1515068705
hexd9936be

228144830 has 16 divisors (see below), whose sum is σ = 411335280. Its totient is φ = 91108032.

The previous prime is 228144823. The next prime is 228144857. The reversal of 228144830 is 38441822.

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 7 ways as a sum of consecutive naturals, for example, 12239 + ... + 24618.

It is an arithmetic number, because the mean of its divisors is an integer number (25708455).

Almost surely, 2228144830 is an apocalyptic number.

228144830 is a deficient number, since it is larger than the sum of its proper divisors (183190450).

228144830 is a wasteful number, since it uses less digits than its factorization.

228144830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37483.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 228144830 is about 15104.4639097189. The cubic root of 228144830 is about 611.0408013019.

The spelling of 228144830 in words is "two hundred twenty-eight million, one hundred forty-four thousand, eight hundred thirty".

Divisors: 1 2 5 10 619 1238 3095 6190 36857 73714 184285 368570 22814483 45628966 114072415 228144830