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228873030 = 23515748593
BaseRepresentation
bin11011010010001…
…01001101000110
3120221122221202220
431221011031012
5432042414110
634413313210
75446250211
oct1551051506
9527587686
10228873030
11108213771
1264795806
1338556339
142257a778
151515e370
hexda45346

228873030 has 32 divisors (see below), whose sum is σ = 552805344. Its totient is φ = 60642816.

The previous prime is 228872953. The next prime is 228873041. The reversal of 228873030 is 30378822.

It is a happy number.

It is a super-2 number, since 2×2288730302 = 104765727722761800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 228872982 and 228873000.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 19587 + ... + 29006.

It is an arithmetic number, because the mean of its divisors is an integer number (17275167).

Almost surely, 2228873030 is an apocalyptic number.

228873030 is an abundant number, since it is smaller than the sum of its proper divisors (323932314).

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

228873030 is a wasteful number, since it uses less digits than its factorization.

228873030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48760.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 228873030 is about 15128.5501618628. The cubic root of 228873030 is about 611.6902240637.

The spelling of 228873030 in words is "two hundred twenty-eight million, eight hundred seventy-three thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 157 314 471 785 942 1570 2355 4710 48593 97186 145779 242965 291558 485930 728895 1457790 7629101 15258202 22887303 38145505 45774606 76291010 114436515 228873030