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2130471 = 32724831
BaseRepresentation
bin1000001000001000100111
311000020110100
420020020213
51021133341
6113355143
724052200
oct10101047
94006410
102130471
111225722
12868ab3
13597945
143d65a7
152c13b6
hex208227

2130471 has 18 divisors (see below), whose sum is σ = 3580512. Its totient is φ = 1217160.

The previous prime is 2130461. The next prime is 2130473. The reversal of 2130471 is 1740312.

It is not a de Polignac number, because 2130471 - 25 = 2130439 is a prime.

It is a super-3 number, since 3×21304713 = 29010027172105431333, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1975 + ... + 2856.

22130471 is an apocalyptic number.

2130471 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2130471 is a deficient number, since it is larger than the sum of its proper divisors (1450041).

2130471 is a wasteful number, since it uses less digits than its factorization.

2130471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4851 (or 4841 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 2130471 is about 1459.6133049544. The cubic root of 2130471 is about 128.6743181695.

Adding to 2130471 its reverse (1740312), we get a palindrome (3870783).

It can be divided in two parts, 2130 and 471, that added together give a square (2601 = 512).

The spelling of 2130471 in words is "two million, one hundred thirty thousand, four hundred seventy-one".

Divisors: 1 3 7 9 21 49 63 147 441 4831 14493 33817 43479 101451 236719 304353 710157 2130471