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228171084 = 223131173839
BaseRepresentation
bin11011001100110…
…01110101001100
3120220100021212220
431212121311030
5431402433314
634350255340
75440264551
oct1546316514
9526307786
10228171084
11107884349
12644b7550
133836b99b
1422436a28
15150713a9
hexd999d4c

228171084 has 48 divisors (see below), whose sum is σ = 540207360. Its totient is φ = 74950720.

The previous prime is 228171077. The next prime is 228171103. The reversal of 228171084 is 480171822.

It is a happy number.

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, 271537 + ... + 272375.

It is an arithmetic number, because the mean of its divisors is an integer number (11254320).

Almost surely, 2228171084 is an apocalyptic number.

It is an amenable number.

228171084 is an abundant number, since it is smaller than the sum of its proper divisors (312036276).

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

228171084 is a wasteful number, since it uses less digits than its factorization.

228171084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150 (or 1148 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 228171084 is about 15105.3329655456. The cubic root of 228171084 is about 611.0642391182.

The spelling of 228171084 in words is "two hundred twenty-eight million, one hundred seventy-one thousand, eighty-four".

Divisors: 1 2 3 4 6 12 131 173 262 346 393 519 524 692 786 839 1038 1572 1678 2076 2517 3356 5034 10068 22663 45326 67989 90652 109909 135978 145147 219818 271956 290294 329727 435441 439636 580588 659454 870882 1318908 1741764 19014257 38028514 57042771 76057028 114085542 228171084