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2013343040 = 2656291697
BaseRepresentation
bin111100000000001…
…0010110101000000
312012022110102102202
41320000102311000
513110403434130
6531440532332
7100615063532
oct17000226500
95168412382
102013343040
11943530475
124823210a8
13261169757
1415156d852
15bbb4b145
hex78012d40

2013343040 has 28 divisors (see below), whose sum is σ = 4794273876. Its totient is φ = 805337088.

The previous prime is 2013343001. The next prime is 2013343043. The reversal of 2013343040 is 403433102.

It can be written as a sum of positive squares in 2 ways, for example, as 867655936 + 1145687104 = 29456^2 + 33848^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013343043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3145529 + ... + 3146168.

It is an arithmetic number, because the mean of its divisors is an integer number (171224067).

Almost surely, 22013343040 is an apocalyptic number.

2013343040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2013343040 is an abundant number, since it is smaller than the sum of its proper divisors (2780930836).

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

2013343040 is an equidigital number, since it uses as much as digits as its factorization.

2013343040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6291714 (or 6291704 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 2013343040 is about 44870.2912849917. The cubic root of 2013343040 is about 1262.7167048198.

Adding to 2013343040 its reverse (403433102), we get a palindrome (2416776142).

The spelling of 2013343040 in words is "two billion, thirteen million, three hundred forty-three thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 160 320 6291697 12583394 25166788 31458485 50333576 62916970 100667152 125833940 201334304 251667880 402668608 503335760 1006671520 2013343040