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2013243140 = 225191719733
BaseRepresentation
bin111011111111111…
…1010011100000100
312012022021100101202
41313333322130010
513110342240030
6531434442032
7100614166346
oct16777723404
95168240352
102013243140
11943472407
12482293318
1326113313c
14151545296
15bbb2b745
hex77ffa704

2013243140 has 48 divisors (see below), whose sum is σ = 4261662720. Its totient is φ = 798875520.

The previous prime is 2013243121. The next prime is 2013243161. The reversal of 2013243140 is 413423102.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2746214 + ... + 2746946.

It is an arithmetic number, because the mean of its divisors is an integer number (88784640).

Almost surely, 22013243140 is an apocalyptic number.

2013243140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2013243140 is an abundant number, since it is smaller than the sum of its proper divisors (2248419580).

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

2013243140 is a wasteful number, since it uses less digits than its factorization.

2013243140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652 (or 1650 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2013243140 is about 44869.1780624517. The cubic root of 2013243140 is about 1262.6958195753.

Adding to 2013243140 its reverse (413423102), we get a palindrome (2426666242).

The spelling of 2013243140 in words is "two billion, thirteen million, two hundred forty-three thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 191 382 719 733 764 955 1438 1466 1910 2876 2932 3595 3665 3820 7190 7330 14380 14660 137329 140003 274658 280006 527027 549316 560012 686645 700015 1054054 1373290 1400030 2108108 2635135 2746580 2800060 5270270 10540540 100662157 201324314 402648628 503310785 1006621570 2013243140