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2812880061 = 331721918973
BaseRepresentation
bin1010011110101001…
…0010010010111101
321021000221010001000
42213222102102331
521230044130221
61143041440513
7126464041335
oct24752222275
97230833030
102812880061
111213885472
12666040139
1335a9b9994
141c98180c5
15116e30e26
hexa7a924bd

2812880061 has 48 divisors (see below), whose sum is σ = 4660014400. Its totient is φ = 1671964416.

The previous prime is 2812880041. The next prime is 2812880069. The reversal of 2812880061 is 1600882182.

It is not a de Polignac number, because 2812880061 - 25 = 2812880029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2812879998 and 2812880025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2812880069) 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 47 ways as a sum of consecutive naturals, for example, 138771 + ... + 157743.

Almost surely, 22812880061 is an apocalyptic number.

It is an amenable number.

2812880061 is a deficient number, since it is larger than the sum of its proper divisors (1847134339).

2812880061 is a wasteful number, since it uses less digits than its factorization.

2812880061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19035 (or 19012 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 2812880061 is about 53036.5917174171. The cubic root of 2812880061 is about 1411.6176228745.

The spelling of 2812880061 in words is "two billion, eight hundred twelve million, eight hundred eighty thousand, sixty-one".

Divisors: 1 3 9 17 19 27 51 57 153 171 289 323 459 513 867 969 2601 2907 5491 7803 8721 16473 18973 49419 56919 148257 170757 322541 360487 512271 967623 1081461 2902869 3244383 5483197 6128279 8708607 9733149 16449591 18384837 49348773 55154511 104180743 148046319 165463533 312542229 937626687 2812880061