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228092413 = 487746769
BaseRepresentation
bin11011001100001…
…10100111111101
3120220012021222011
431212012213331
5431342424123
634344451221
75436516313
oct1546064775
9526167864
10228092413
1110783022a
1264479b11
1338341c33
14224160b3
1515057e0d
hexd9869fd

228092413 has 4 divisors (see below), whose sum is σ = 228144060. Its totient is φ = 228040768.

The previous prime is 228092411. The next prime is 228092429. The reversal of 228092413 is 314290822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55905529 + 172186884 = 7477^2 + 13122^2 .

It is a cyclic number.

It is not a de Polignac number, because 228092413 - 21 = 228092411 is a prime.

It is a super-2 number, since 2×2280924132 = 104052297736325138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228092411) 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 3 ways as a sum of consecutive naturals, for example, 18508 + ... + 28261.

It is an arithmetic number, because the mean of its divisors is an integer number (57036015).

Almost surely, 2228092413 is an apocalyptic number.

It is an amenable number.

228092413 is a deficient number, since it is larger than the sum of its proper divisors (51647).

228092413 is an equidigital number, since it uses as much as digits as its factorization.

228092413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51646.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 228092413 is about 15102.7286607421. The cubic root of 228092413 is about 610.9940015287.

The spelling of 228092413 in words is "two hundred twenty-eight million, ninety-two thousand, four hundred thirteen".

Divisors: 1 4877 46769 228092413