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8142768284 = 227741739209
BaseRepresentation
bin1111001010101100…
…01100100010011100
3210000111001111011112
413211112030202130
5113134022041114
63423555441152
7405533250140
oct74526144234
923014044145
108142768284
1134a9420372
1216b2bb61b8
139c9cac4b1
1457362d220
15329cec13e
hex1e558c89c

8142768284 has 24 divisors (see below), whose sum is σ = 16288147680. Its totient is φ = 3489198336.

The previous prime is 8142768259. The next prime is 8142768289. The reversal of 8142768284 is 4828672418.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8142768289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188072 + ... + 227280.

It is an arithmetic number, because the mean of its divisors is an integer number (678672820).

Almost surely, 28142768284 is an apocalyptic number.

It is an amenable number.

8142768284 is an abundant number, since it is smaller than the sum of its proper divisors (8145379396).

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

8142768284 is a wasteful number, since it uses less digits than its factorization.

8142768284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46637 (or 46635 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 50.

The square root of 8142768284 is about 90237.2887668950. The cubic root of 8142768284 is about 2011.8272768896.

The spelling of 8142768284 in words is "eight billion, one hundred forty-two million, seven hundred sixty-eight thousand, two hundred eighty-four".

Divisors: 1 2 4 7 14 28 7417 14834 29668 39209 51919 78418 103838 156836 207676 274463 548926 1097852 290813153 581626306 1163252612 2035692071 4071384142 8142768284