Search a number
-
+
228615800 = 23527612677
BaseRepresentation
bin11011010000001…
…10011001111000
3120221011212220212
431220012121320
5432011201200
634404010252
75444126240
oct1550063170
9527155825
10228615800
11108058486
1264690988
133849622a
1422510b20
151510d035
hexda06678

228615800 has 96 divisors (see below), whose sum is σ = 617653920. Its totient is φ = 77068800.

The previous prime is 228615799. The next prime is 228615833. The reversal of 228615800 is 8516822.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84062 + ... + 86738.

It is an arithmetic number, because the mean of its divisors is an integer number (6433895).

Almost surely, 2228615800 is an apocalyptic number.

228615800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228615800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308826960).

228615800 is an abundant number, since it is smaller than the sum of its proper divisors (389038120).

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

228615800 is a wasteful number, since it uses less digits than its factorization.

228615800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761 (or 2752 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 228615800 is about 15120.0462962254. The cubic root of 228615800 is about 611.4609789668.

The spelling of 228615800 in words is "two hundred twenty-eight million, six hundred fifteen thousand, eight hundred".

Divisors: 1 2 4 5 7 8 10 14 20 25 28 35 40 50 56 61 70 100 122 140 175 200 244 280 305 350 427 488 610 700 854 1220 1400 1525 1708 2135 2440 2677 3050 3416 4270 5354 6100 8540 10675 10708 12200 13385 17080 18739 21350 21416 26770 37478 42700 53540 66925 74956 85400 93695 107080 133850 149912 163297 187390 267700 326594 374780 468475 535400 653188 749560 816485 936950 1143079 1306376 1632970 1873900 2286158 3265940 3747800 4082425 4572316 5715395 6531880 8164850 9144632 11430790 16329700 22861580 28576975 32659400 45723160 57153950 114307900 228615800