Search a number
-
+
228485479 is a prime number
BaseRepresentation
bin11011001111001…
…10100101100111
3120220221021011011
431213212211213
5431443013404
634401123051
75443044265
oct1547464547
9526837134
10228485479
11107a79582
1264629487
133844bb11
14224b9435
15150d4604
hexd9e6967

228485479 has 2 divisors, whose sum is σ = 228485480. Its totient is φ = 228485478.

The previous prime is 228485447. The next prime is 228485483. The reversal of 228485479 is 974584822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228485479 - 25 = 228485447 is a prime.

It is a super-2 number, since 2×2284854792 = 104411228227718882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228485419) 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 as a sum of consecutive naturals, namely, 114242739 + 114242740.

It is an arithmetic number, because the mean of its divisors is an integer number (114242740).

Almost surely, 2228485479 is an apocalyptic number.

228485479 is a deficient number, since it is larger than the sum of its proper divisors (1).

228485479 is an equidigital number, since it uses as much as digits as its factorization.

228485479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1290240, while the sum is 49.

The square root of 228485479 is about 15115.7361382104. The cubic root of 228485479 is about 611.3447703866.

The spelling of 228485479 in words is "two hundred twenty-eight million, four hundred eighty-five thousand, four hundred seventy-nine".