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228239060 = 2257697
BaseRepresentation
bin11011001101010…
…10011011010100
3120220110202010112
431212222123110
5431412122220
634351542152
75441000000
oct1546523324
9526422115
10228239060
11107920425
126452a958
13383938ca
1422453700
15150865c5
hexd9aa6d4

228239060 has 84 divisors (see below), whose sum is σ = 564949812. Its totient is φ = 77446656.

The previous prime is 228239057. The next prime is 228239071. The reversal of 228239060 is 60932822.

228239060 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 92236816 + 136002244 = 9604^2 + 11662^2 .

It is a nialpdrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2352932 + ... + 2353028.

It is an arithmetic number, because the mean of its divisors is an integer number (6725593).

Almost surely, 2228239060 is an apocalyptic number.

228239060 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 228239060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282474906).

228239060 is an abundant number, since it is smaller than the sum of its proper divisors (336710752).

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

228239060 is an frugal number, since it uses more digits than its factorization.

228239060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 228239060 is about 15107.5828642440. The cubic root of 228239060 is about 611.1249151948.

The spelling of 228239060 in words is "two hundred twenty-eight million, two hundred thirty-nine thousand, sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 49 70 97 98 140 194 196 245 343 388 485 490 679 686 970 980 1358 1372 1715 1940 2401 2716 3395 3430 4753 4802 6790 6860 9506 9604 12005 13580 16807 19012 23765 24010 33271 33614 47530 48020 66542 67228 84035 95060 117649 133084 166355 168070 232897 235298 332710 336140 465794 470596 588245 665420 931588 1164485 1176490 1630279 2328970 2352980 3260558 4657940 6521116 8151395 11411953 16302790 22823906 32605580 45647812 57059765 114119530 228239060