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228773190 = 23523931907
BaseRepresentation
bin11011010001011…
…00110101000110
3120221110212211010
431220230311012
5432031220230
634411223050
75445353142
oct1550546506
9527425733
10228773190
11108155758
1264747a86
133851ca69
1422552222
151513e9b0
hexda2cd46

228773190 has 32 divisors (see below), whose sum is σ = 551370240. Its totient is φ = 60749024.

The previous prime is 228773189. The next prime is 228773191. The reversal of 228773190 is 91377822.

228773190 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (228773189) and next prime (228773191).

It is a super-3 number, since 3×2287731903 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a zygodrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228773191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8784 + ... + 23123.

It is an arithmetic number, because the mean of its divisors is an integer number (17230320).

Almost surely, 2228773190 is an apocalyptic number.

228773190 is an abundant number, since it is smaller than the sum of its proper divisors (322597050).

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

228773190 is a wasteful number, since it uses less digits than its factorization.

228773190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32156.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 228773190 is about 15125.2500805772. The cubic root of 228773190 is about 611.6012663937.

The spelling of 228773190 in words is "two hundred twenty-eight million, seven hundred seventy-three thousand, one hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 239 478 717 1195 1434 2390 3585 7170 31907 63814 95721 159535 191442 319070 478605 957210 7625773 15251546 22877319 38128865 45754638 76257730 114386595 228773190