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228790030 = 2577344773
BaseRepresentation
bin11011010001100…
…00111100001110
3120221111201220211
431220300330032
5432032240110
634411433034
75445453220
oct1550607416
9527451824
10228790030
11108167377
126475577a
1338527621
1422558410
151514498a
hexda30f0e

228790030 has 32 divisors (see below), whose sum is σ = 477111744. Its totient is φ = 77366016.

The previous prime is 228789997. The next prime is 228790049. The reversal of 228790030 is 30097822.

228790030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 228789974 and 228790001.

It is a congruent 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, 17277 + ... + 27496.

It is an arithmetic number, because the mean of its divisors is an integer number (14909742).

Almost surely, 2228790030 is an apocalyptic number.

228790030 is an abundant number, since it is smaller than the sum of its proper divisors (248321714).

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

228790030 is a wasteful number, since it uses less digits than its factorization.

228790030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44860.

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

The square root of 228790030 is about 15125.8067553437. The cubic root of 228790030 is about 611.6162726868.

The spelling of 228790030 in words is "two hundred twenty-eight million, seven hundred ninety thousand, thirty".

Divisors: 1 2 5 7 10 14 35 70 73 146 365 511 730 1022 2555 5110 44773 89546 223865 313411 447730 626822 1567055 3134110 3268429 6536858 16342145 22879003 32684290 45758006 114395015 228790030