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228548860 = 225101113143
BaseRepresentation
bin11011001111101…
…10000011111100
3120221001111002121
431213312003330
5432002030420
634402332324
75443430131
oct1547660374
9527044077
10228548860
11108012161
126465a0a4
1338471917
14224d4588
15150e82aa
hexd9f60fc

228548860 has 24 divisors (see below), whose sum is σ = 484708896. Its totient is φ = 90513600.

The previous prime is 228548849. The next prime is 228548869. The reversal of 228548860 is 68845822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228548869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54552 + ... + 58591.

It is an arithmetic number, because the mean of its divisors is an integer number (20196204).

Almost surely, 2228548860 is an apocalyptic number.

228548860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228548860 is an abundant number, since it is smaller than the sum of its proper divisors (256160036).

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

228548860 is a wasteful number, since it uses less digits than its factorization.

228548860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113253 (or 113251 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 43.

The square root of 228548860 is about 15117.8325166010. The cubic root of 228548860 is about 611.4012933960.

The spelling of 228548860 in words is "two hundred twenty-eight million, five hundred forty-eight thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 101 202 404 505 1010 2020 113143 226286 452572 565715 1131430 2262860 11427443 22854886 45709772 57137215 114274430 228548860