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2051087829 = 371913139241
BaseRepresentation
bin111101001000001…
…0001110111010101
312021221111001112220
41322100101313111
513200034302304
6535305532553
7101553646620
oct17220216725
95257431486
102051087829
1196287070a
12492aa4159
13268c2394b
14156596db7
15c0104ad9
hex7a411dd5

2051087829 has 32 divisors (see below), whose sum is σ = 3315164160. Its totient is φ = 1101859200.

The previous prime is 2051087809. The next prime is 2051087861. The reversal of 2051087829 is 9287801502.

It is not a de Polignac number, because 2051087829 - 217 = 2050956757 is a prime.

It is a super-2 number, since 2×20510878292 = 8413922564543866482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051087809) 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, 32649 + ... + 71889.

It is an arithmetic number, because the mean of its divisors is an integer number (103598880).

Almost surely, 22051087829 is an apocalyptic number.

It is an amenable number.

2051087829 is a deficient number, since it is larger than the sum of its proper divisors (1264076331).

2051087829 is a wasteful number, since it uses less digits than its factorization.

2051087829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39401.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 2051087829 is about 45288.9371590900. The cubic root of 2051087829 is about 1270.5587532444.

The spelling of 2051087829 in words is "two billion, fifty-one million, eighty-seven thousand, eight hundred twenty-nine".

Divisors: 1 3 7 19 21 57 131 133 393 399 917 2489 2751 7467 17423 39241 52269 117723 274687 745579 824061 2236737 5140571 5219053 15421713 15657159 35983997 97670849 107951991 293012547 683695943 2051087829