Search a number
-
+
229405120 = 2657472179
BaseRepresentation
bin11011010110001…
…11000111000000
3120222122222122221
431223013013000
5432211430440
634432540424
75453624410
oct1553070700
9528588587
10229405120
1110854750a
12649b1714
13386b1599
1422678640
1515216d4a
hexdac71c0

229405120 has 112 divisors (see below), whose sum is σ = 637885440. Its totient is φ = 76944384.

The previous prime is 229405117. The next prime is 229405133. The reversal of 229405120 is 21504922.

It is a tau number, because it is divible by the number of its divisors (112).

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 15 ways as a sum of consecutive naturals, for example, 104191 + ... + 106369.

Almost surely, 2229405120 is an apocalyptic number.

229405120 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 229405120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318942720).

229405120 is an abundant number, since it is smaller than the sum of its proper divisors (408480320).

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

229405120 is a wasteful number, since it uses less digits than its factorization.

229405120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2250 (or 2240 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 229405120 is about 15146.1255771897. The cubic root of 229405120 is about 612.1638816675.

The spelling of 229405120 in words is "two hundred twenty-nine million, four hundred five thousand, one hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 47 56 64 70 80 94 112 140 160 188 224 235 280 320 329 376 448 470 560 658 752 940 1120 1316 1504 1645 1880 2179 2240 2632 3008 3290 3760 4358 5264 6580 7520 8716 10528 10895 13160 15040 15253 17432 21056 21790 26320 30506 34864 43580 52640 61012 69728 76265 87160 102413 105280 122024 139456 152530 174320 204826 244048 305060 348640 409652 488096 512065 610120 697280 716891 819304 976192 1024130 1220240 1433782 1638608 2048260 2440480 2867564 3277216 3584455 4096520 4880960 5735128 6554432 7168910 8193040 11470256 14337820 16386080 22940512 28675640 32772160 45881024 57351280 114702560 229405120