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228830274 = 23237343589
BaseRepresentation
bin11011010001110…
…10110001000010
3120221120210010100
431220322301002
5432040032044
634412343230
75446011441
oct1550726102
9527523110
10228830274
11108194632
1264774b16
133853ca3a
1422568d58
1515151869
hexda3ac42

228830274 has 24 divisors (see below), whose sum is σ = 509200380. Its totient is φ = 74215008.

The previous prime is 228830221. The next prime is 228830291. The reversal of 228830274 is 472038822.

228830274 is a `hidden beast` number, since 2 + 288 + 302 + 74 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 226713249 + 2117025 = 15057^2 + 1455^2 .

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 171129 + ... + 172460.

Almost surely, 2228830274 is an apocalyptic number.

228830274 is an abundant number, since it is smaller than the sum of its proper divisors (280370106).

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

228830274 is a wasteful number, since it uses less digits than its factorization.

228830274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343634 (or 343631 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 228830274 is about 15127.1370060564. The cubic root of 228830274 is about 611.6521315370.

The spelling of 228830274 in words is "two hundred twenty-eight million, eight hundred thirty thousand, two hundred seventy-four".

Divisors: 1 2 3 6 9 18 37 74 111 222 333 666 343589 687178 1030767 2061534 3092301 6184602 12712793 25425586 38138379 76276758 114415137 228830274