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2130130044 = 2232743196579
BaseRepresentation
bin111111011110111…
…0011010001111100
312111110012211002100
41332331303101330
513330303130134
6551212025100
7103533543450
oct17675632174
95443184070
102130130044
119a3448259
124b5462190
1327c40a0a3
14162c90660
15c7019999
hex7ef7347c

2130130044 has 72 divisors (see below), whose sum is σ = 6296850560. Its totient is φ = 594451872.

The previous prime is 2130130043. The next prime is 2130130111. The reversal of 2130130044 is 4400310312.

2130130044 is a `hidden beast` number, since 21 + 301 + 300 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2130129999 and 2130130026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130130043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87454 + ... + 109125.

Almost surely, 22130130044 is an apocalyptic number.

It is an amenable number.

2130130044 is an abundant number, since it is smaller than the sum of its proper divisors (4166720516).

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

2130130044 is a wasteful number, since it uses less digits than its factorization.

2130130044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196639 (or 196634 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2130130044 is about 46153.3318840579. The cubic root of 2130130044 is about 1286.6745354950.

Adding to 2130130044 its reverse (4400310312), we get a palindrome (6530440356).

The spelling of 2130130044 in words is "two billion, one hundred thirty million, one hundred thirty thousand, forty-four".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 28 36 42 43 63 84 86 126 129 172 252 258 301 387 516 602 774 903 1204 1548 1806 2709 3612 5418 10836 196579 393158 589737 786316 1179474 1376053 1769211 2358948 2752106 3538422 4128159 5504212 7076844 8256318 8452897 12384477 16512636 16905794 24768954 25358691 33811588 49537908 50717382 59170279 76076073 101434764 118340558 152152146 177510837 236681116 304304292 355021674 532532511 710043348 1065065022 2130130044