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2271227090 = 251131798431
BaseRepresentation
bin1000011101100000…
…0010110011010010
312212021201021211212
42013120002303102
514122413231330
61013212140122
7110166053216
oct20730026322
95767637755
102271227090
11a66059590
12534767642
132a270c872
141778dc946
15d45db295
hex87602cd2

2271227090 has 64 divisors (see below), whose sum is σ = 4662558720. Its totient is φ = 789048000.

The previous prime is 2271227087. The next prime is 2271227093. The reversal of 2271227090 is 907221722.

It is an interprime number because it is at equal distance from previous prime (2271227087) and next prime (2271227093).

It is not an unprimeable number, because it can be changed into a prime (2271227093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 265175 + ... + 273605.

It is an arithmetic number, because the mean of its divisors is an integer number (72852480).

Almost surely, 22271227090 is an apocalyptic number.

2271227090 is an abundant number, since it is smaller than the sum of its proper divisors (2391331630).

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

2271227090 is a wasteful number, since it uses less digits than its factorization.

2271227090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8559.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 2271227090 is about 47657.3928158056. The cubic root of 2271227090 is about 1314.4785993069.

The spelling of 2271227090 in words is "two billion, two hundred seventy-one million, two hundred twenty-seven thousand, ninety".

Divisors: 1 2 5 10 11 22 31 55 62 79 110 155 158 310 341 395 682 790 869 1705 1738 2449 3410 4345 4898 8431 8690 12245 16862 24490 26939 42155 53878 84310 92741 134695 185482 261361 269390 463705 522722 666049 927410 1306805 1332098 2613610 2874971 3330245 5749942 6660490 7326539 14374855 14653078 20647519 28749710 36632695 41295038 73265390 103237595 206475190 227122709 454245418 1135613545 2271227090