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2013130320 = 243547178469
BaseRepresentation
bin111011111111101…
…1110111001010000
312012022001121122020
41313333132321100
513110330132240
6531432211440
7100613216415
oct16777367120
95168047566
102013130320
119433a5673
12482239b80
132610c3996
1415151610c
15bbb080d0
hex77fdee50

2013130320 has 80 divisors (see below), whose sum is σ = 6373520640. Its totient is φ = 525409792.

The previous prime is 2013130309. The next prime is 2013130331. The reversal of 2013130320 is 230313102.

It is an interprime number because it is at equal distance from previous prime (2013130309) and next prime (2013130331).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2013130320.

It is a congruent number.

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, 77955 + ... + 100514.

It is an arithmetic number, because the mean of its divisors is an integer number (79669008).

Almost surely, 22013130320 is an apocalyptic number.

2013130320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2013130320 is an abundant number, since it is smaller than the sum of its proper divisors (4360390320).

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

2013130320 is a wasteful number, since it uses less digits than its factorization.

2013130320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178532 (or 178526 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 2013130320 is about 44867.9208343779. The cubic root of 2013130320 is about 1262.6722324253.

Adding to 2013130320 its reverse (230313102), we get a palindrome (2243443422).

The spelling of 2013130320 in words is "two billion, thirteen million, one hundred thirty thousand, three hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 47 48 60 80 94 120 141 188 235 240 282 376 470 564 705 752 940 1128 1410 1880 2256 2820 3760 5640 11280 178469 356938 535407 713876 892345 1070814 1427752 1784690 2141628 2677035 2855504 3569380 4283256 5354070 7138760 8388043 8566512 10708140 14277520 16776086 21416280 25164129 33552172 41940215 42832560 50328258 67104344 83880430 100656516 125820645 134208688 167760860 201313032 251641290 335521720 402626064 503282580 671043440 1006565160 2013130320