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2130431044 = 2274310971613
BaseRepresentation
bin111111011111011…
…1100110001000100
312111110210002222111
41332332330301010
513330342243134
6551222310404
7103536236140
oct17676746104
95443702874
102130431044
119a3633415
124b5588404
1327c4b40b1
14162d2c220
15c7078c64
hex7efbcc44

2130431044 has 48 divisors (see below), whose sum is σ = 4366631808. Its totient is φ = 890443008.

The previous prime is 2130431033. The next prime is 2130431047. The reversal of 2130431044 is 4401340312.

It is not an unprimeable number, because it can be changed into a prime (2130431047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1319982 + ... + 1321594.

It is an arithmetic number, because the mean of its divisors is an integer number (90971496).

Almost surely, 22130431044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2130431044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2183315904).

2130431044 is an abundant number, since it is smaller than the sum of its proper divisors (2236200764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2130431044 is a wasteful number, since it uses less digits than its factorization.

2130431044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764 (or 2762 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2130431044 is about 46156.5926385386. The cubic root of 2130431044 is about 1286.7351375531.

Adding to 2130431044 its reverse (4401340312), we get a palindrome (6531771356).

The spelling of 2130431044 in words is "two billion, one hundred thirty million, four hundred thirty-one thousand, forty-four".

Divisors: 1 2 4 7 14 28 43 86 172 301 602 1097 1204 1613 2194 3226 4388 6452 7679 11291 15358 22582 30716 45164 47171 69359 94342 138718 188684 277436 330197 485513 660394 971026 1320788 1769461 1942052 3538922 7077844 12386227 24772454 49544908 76086823 152173646 304347292 532607761 1065215522 2130431044