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228793000 = 2353228793
BaseRepresentation
bin11011010001100…
…01101010101000
3120221111212222211
431220301222220
5432032334000
634411454504
75445464662
oct1550615250
9527455884
10228793000
11108169627
1264757434
1338528a97
1422559532
15151457ba
hexda31aa8

228793000 has 32 divisors (see below), whose sum is σ = 535377960. Its totient is φ = 91516800.

The previous prime is 228792961. The next prime is 228793001. The reversal of 228793000 is 397822.

It can be written as a sum of positive squares in 4 ways, for example, as 40170244 + 188622756 = 6338^2 + 13734^2 .

It is not an unprimeable number, because it can be changed into a prime (228793001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 113397 + ... + 115396.

Almost surely, 2228793000 is an apocalyptic number.

228793000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228793000 is an abundant number, since it is smaller than the sum of its proper divisors (306584960).

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

228793000 is a wasteful number, since it uses less digits than its factorization.

228793000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228814 (or 228800 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 228793000 is about 15125.9049316066. The cubic root of 228793000 is about 611.6189192073.

The spelling of 228793000 in words is "two hundred twenty-eight million, seven hundred ninety-three thousand".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 125 200 250 500 1000 228793 457586 915172 1143965 1830344 2287930 4575860 5719825 9151720 11439650 22879300 28599125 45758600 57198250 114396500 228793000