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2120881293 = 331133891787
BaseRepresentation
bin111111001101010…
…0001010010001101
312110210210221012000
41332122201102031
513320421200133
6550241502513
7103362123246
oct17632412215
95423727160
102120881293
11999200563
124b2341a39
1327a51c45b
14161963ccd
15c62de413
hex7e6a148d

2120881293 has 32 divisors (see below), whose sum is σ = 3179779200. Its totient is φ = 1397023488.

The previous prime is 2120881277. The next prime is 2120881339. The reversal of 2120881293 is 3921880212.

It is not a de Polignac number, because 2120881293 - 24 = 2120881277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120881193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1185946 + ... + 1187732.

It is an arithmetic number, because the mean of its divisors is an integer number (99368100).

Almost surely, 22120881293 is an apocalyptic number.

It is an amenable number.

2120881293 is a deficient number, since it is larger than the sum of its proper divisors (1058897907).

2120881293 is a wasteful number, since it uses less digits than its factorization.

2120881293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298 (or 2292 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 2120881293 is about 46053.0269689192. The cubic root of 2120881293 is about 1284.8096419964.

The spelling of 2120881293 in words is "two billion, one hundred twenty million, eight hundred eighty-one thousand, two hundred ninety-three".

Divisors: 1 3 9 27 113 339 389 1017 1167 1787 3051 3501 5361 10503 16083 43957 48249 131871 201931 395613 605793 695143 1186839 1817379 2085429 5452137 6256287 18768861 78551159 235653477 706960431 2120881293