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228838555 = 51122918169
BaseRepresentation
bin11011010001111…
…00110010011011
3120221121012111001
431220330302123
5432040313210
634412445431
75446044541
oct1550746233
9527535431
10228838555
1110819a880
1264779877
133854373a
142256bd91
151515403a
hexda3cc9b

228838555 has 16 divisors (see below), whose sum is σ = 300895200. Its totient is φ = 165692160.

The previous prime is 228838543. The next prime is 228838579. The reversal of 228838555 is 555838822.

It is not a de Polignac number, because 228838555 - 223 = 220449947 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3511 + ... + 21679.

It is an arithmetic number, because the mean of its divisors is an integer number (18805950).

Almost surely, 2228838555 is an apocalyptic number.

228838555 is a deficient number, since it is larger than the sum of its proper divisors (72056645).

228838555 is a wasteful number, since it uses less digits than its factorization.

228838555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18414.

The product of its digits is 768000, while the sum is 46.

The square root of 228838555 is about 15127.4107169733. The cubic root of 228838555 is about 611.6595096840.

The spelling of 228838555 in words is "two hundred twenty-eight million, eight hundred thirty-eight thousand, five hundred fifty-five".

Divisors: 1 5 11 55 229 1145 2519 12595 18169 90845 199859 999295 4160701 20803505 45767711 228838555