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228522066 = 23238212017
BaseRepresentation
bin11011001111011…
…11100001010010
3120221000010100020
431213233201102
5432000201231
634402004310
75443256043
oct1547574122
9527003306
10228522066
11107aa4013
1264646696
1338462676
14224c88ca
15150e0396
hexd9ef852

228522066 has 32 divisors (see below), whose sum is σ = 477733248. Its totient is φ = 72737280.

The previous prime is 228522053. The next prime is 228522067. The reversal of 228522066 is 660225822.

It is not an unprimeable number, because it can be changed into a prime (228522067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112290 + ... + 114306.

It is an arithmetic number, because the mean of its divisors is an integer number (14929164).

Almost surely, 2228522066 is an apocalyptic number.

228522066 is an abundant number, since it is smaller than the sum of its proper divisors (249211182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228522066 is a wasteful number, since it uses less digits than its factorization.

228522066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 228522066 is about 15116.9463186187. The cubic root of 228522066 is about 611.3773998524.

Adding to 228522066 its reverse (660225822), we get a palindrome (888747888).

The spelling of 228522066 in words is "two hundred twenty-eight million, five hundred twenty-two thousand, sixty-six".

Divisors: 1 2 3 6 23 46 69 138 821 1642 2017 2463 4034 4926 6051 12102 18883 37766 46391 56649 92782 113298 139173 278346 1655957 3311914 4967871 9935742 38087011 76174022 114261033 228522066