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228337141 = 673733893
BaseRepresentation
bin11011001110000…
…10010111110101
3120220122201200011
431213002113311
5431423242031
634354020221
75441555644
oct1547022765
9526581604
10228337141
1110798808a
1264577671
13383c9446
142247b35b
15150a56b1
hexd9c25f5

228337141 has 4 divisors (see below), whose sum is σ = 228377772. Its totient is φ = 228296512.

The previous prime is 228337121. The next prime is 228337147. The reversal of 228337141 is 141733822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 141733822 = 270866911.

It can be written as a sum of positive squares in 2 ways, for example, as 145709041 + 82628100 = 12071^2 + 9090^2 .

It is a cyclic number.

It is not a de Polignac number, because 228337141 - 29 = 228336629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228337147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10210 + ... + 23683.

It is an arithmetic number, because the mean of its divisors is an integer number (57094443).

Almost surely, 2228337141 is an apocalyptic number.

It is an amenable number.

228337141 is a deficient number, since it is larger than the sum of its proper divisors (40631).

228337141 is an equidigital number, since it uses as much as digits as its factorization.

228337141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40630.

The product of its digits is 8064, while the sum is 31.

The square root of 228337141 is about 15110.8286007088. The cubic root of 228337141 is about 611.2124420754.

The spelling of 228337141 in words is "two hundred twenty-eight million, three hundred thirty-seven thousand, one hundred forty-one".

Divisors: 1 6737 33893 228337141