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228145459 is a prime number
BaseRepresentation
bin11011001100100…
…11100100110011
3120220021222201211
431212103210303
5431401123314
634345540551
75440130053
oct1546234463
9526258654
10228145459
11107867073
12644a4757
1338360119
142242b563
15150689c4
hexd993933

228145459 has 2 divisors, whose sum is σ = 228145460. Its totient is φ = 228145458.

The previous prime is 228145451. The next prime is 228145469. The reversal of 228145459 is 954541822.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228145459 - 23 = 228145451 is a prime.

It is not a weakly prime, because it can be changed into another prime (228145451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114072729 + 114072730.

It is an arithmetic number, because the mean of its divisors is an integer number (114072730).

Almost surely, 2228145459 is an apocalyptic number.

228145459 is a deficient number, since it is larger than the sum of its proper divisors (1).

228145459 is an equidigital number, since it uses as much as digits as its factorization.

228145459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 40.

The square root of 228145459 is about 15104.4847313637. The cubic root of 228145459 is about 611.0413628521.

The spelling of 228145459 in words is "two hundred twenty-eight million, one hundred forty-five thousand, four hundred fifty-nine".