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228506299 = 7171920221
BaseRepresentation
bin11011001111010…
…11101010111011
3120220222022201021
431213223222323
5431444200144
634401403311
75443162060
oct1547535273
9526868637
10228506299
11107a9318a
1264639537
1338458438
14224c2c67
15150da884
hexd9ebabb

228506299 has 8 divisors (see below), whose sum is σ = 276511968. Its totient is φ = 184341120.

The previous prime is 228506297. The next prime is 228506303. The reversal of 228506299 is 992605822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228506299 - 21 = 228506297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228506297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 959992 + ... + 960229.

It is an arithmetic number, because the mean of its divisors is an integer number (34563996).

Almost surely, 2228506299 is an apocalyptic number.

228506299 is a deficient number, since it is larger than the sum of its proper divisors (48005669).

228506299 is a wasteful number, since it uses less digits than its factorization.

228506299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920245.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 228506299 is about 15116.4248087966. The cubic root of 228506299 is about 611.3633387607.

The spelling of 228506299 in words is "two hundred twenty-eight million, five hundred six thousand, two hundred ninety-nine".

Divisors: 1 7 17 119 1920221 13441547 32643757 228506299