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8730228 = 22313191293
BaseRepresentation
bin100001010011…
…011001110100
3121102112121210
4201103121310
54213331403
6511041420
7134130363
oct41233164
917375553
108730228
114a23171
122b10270
131a68920
1412337da
15b76b03
hex853674

8730228 has 48 divisors (see below), whose sum is σ = 22127616. Its totient is φ = 2663040.

The previous prime is 8730181. The next prime is 8730229. The reversal of 8730228 is 8220378.

It is a junction number, because it is equal to n+sod(n) for n = 8730195 and 8730204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8730229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29650 + ... + 29942.

It is an arithmetic number, because the mean of its divisors is an integer number (460992).

Almost surely, 28730228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8730228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11063808).

8730228 is an abundant number, since it is smaller than the sum of its proper divisors (13397388).

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

8730228 is a wasteful number, since it uses less digits than its factorization.

8730228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504 (or 502 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 8730228 is about 2954.6959234412. The cubic root of 8730228 is about 205.9089364057.

It can be divided in two parts, 8 and 730228, that added together give a triangular number (730236 = T1208).

The spelling of 8730228 in words is "eight million, seven hundred thirty thousand, two hundred twenty-eight".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 191 293 382 573 586 764 879 1146 1172 1758 2292 2483 3516 3809 4966 7449 7618 9932 11427 14898 15236 22854 29796 45708 55963 111926 167889 223852 335778 671556 727519 1455038 2182557 2910076 4365114 8730228