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2005130254 = 21187844621
BaseRepresentation
bin111011110000011…
…1101110000001110
312011202000011121111
41313200331300032
513101303132004
6530544522234
7100455216541
oct16740756016
95152004544
102005130254
11939931046
1247b62037a
1325c55250a
14150432858
15bb077a04
hex7783dc0e

2005130254 has 8 divisors (see below), whose sum is σ = 3010232808. Its totient is φ = 1001719320.

The previous prime is 2005130243. The next prime is 2005130261. The reversal of 2005130254 is 4520315002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20051302542 = 8041094671012209032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 419937 + ... + 424684.

It is an arithmetic number, because the mean of its divisors is an integer number (376279101).

Almost surely, 22005130254 is an apocalyptic number.

2005130254 is a deficient number, since it is larger than the sum of its proper divisors (1005102554).

2005130254 is a wasteful number, since it uses less digits than its factorization.

2005130254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845810.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 2005130254 is about 44778.6807978976. The cubic root of 2005130254 is about 1260.9974159146.

Adding to 2005130254 its reverse (4520315002), we get a palindrome (6525445256).

It can be divided in two parts, 20051 and 30254, that added together give a palindrome (50305).

The spelling of 2005130254 in words is "two billion, five million, one hundred thirty thousand, two hundred fifty-four".

Divisors: 1 2 1187 2374 844621 1689242 1002565127 2005130254