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228124284 = 22319010357
BaseRepresentation
bin11011001100011…
…10011001111100
3120220020220200120
431212032121330
5431344434114
634345254540
75440011243
oct1546163174
9526226616
10228124284
11107852173
1264494450
13383535ab
142242395a
15150625a9
hexd98e67c

228124284 has 12 divisors (see below), whose sum is σ = 532290024. Its totient is φ = 76041424.

The previous prime is 228124283. The next prime is 228124291. The reversal of 228124284 is 482421822.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228124283) 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, 9505167 + ... + 9505190.

It is an arithmetic number, because the mean of its divisors is an integer number (44357502).

Almost surely, 2228124284 is an apocalyptic number.

It is an amenable number.

228124284 is an abundant number, since it is smaller than the sum of its proper divisors (304165740).

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

228124284 is a wasteful number, since it uses less digits than its factorization.

228124284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19010364 (or 19010362 counting only the distinct ones).

The product of its digits is 16384, while the sum is 33.

The square root of 228124284 is about 15103.7837643420. The cubic root of 228124284 is about 611.0224579522.

It can be divided in two parts, 2281 and 24284, that added together give a triangular number (26565 = T230).

The spelling of 228124284 in words is "two hundred twenty-eight million, one hundred twenty-four thousand, two hundred eighty-four".

Divisors: 1 2 3 4 6 12 19010357 38020714 57031071 76041428 114062142 228124284