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2054205 = 325191239
BaseRepresentation
bin111110101100000111101
310212100211200
413311200331
51011213310
6112010113
723313636
oct7654075
93770750
102054205
11118339a
12830939
1356c00a
143b688d
152a89c0
hex1f583d

2054205 has 24 divisors (see below), whose sum is σ = 3594240. Its totient is φ = 1085280.

The previous prime is 2054197. The next prime is 2054207. The reversal of 2054205 is 5024502.

It is not a de Polignac number, because 2054205 - 23 = 2054197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2054207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8476 + ... + 8714.

It is an arithmetic number, because the mean of its divisors is an integer number (149760).

22054205 is an apocalyptic number.

2054205 is the 717-th decagonal number.

It is an amenable number.

2054205 is a deficient number, since it is larger than the sum of its proper divisors (1540035).

2054205 is a wasteful number, since it uses less digits than its factorization.

2054205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 2054205 is about 1433.2498037676. The cubic root of 2054205 is about 127.1202077593.

Adding to 2054205 its reverse (5024502), we get a palindrome (7078707).

The spelling of 2054205 in words is "two million, fifty-four thousand, two hundred five".

Divisors: 1 3 5 9 15 45 191 239 573 717 955 1195 1719 2151 2865 3585 8595 10755 45649 136947 228245 410841 684735 2054205