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2013143808 = 283131729409
BaseRepresentation
bin111011111111110…
…0010001100000000
312012022002022010210
41313333202030000
513110331100213
6531432354120
7100613303634
oct16777421400
95168068123
102013143808
11943404815
12482245940
132610c9b70
1415151adc4
15bbb0c0c3
hex77fe2300

2013143808 has 288 divisors, whose sum is σ = 6335582400. Its totient is φ = 561512448.

The previous prime is 2013143801. The next prime is 2013143819. The reversal of 2013143808 is 8083413102.

It is not an unprimeable number, because it can be changed into a prime (2013143801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4921908 + ... + 4922316.

It is an arithmetic number, because the mean of its divisors is an integer number (21998550).

Almost surely, 22013143808 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 2013143808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3167791200).

2013143808 is an abundant number, since it is smaller than the sum of its proper divisors (4322438592).

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

2013143808 is a wasteful number, since it uses less digits than its factorization.

2013143808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 2013143808 is about 44868.0711419602. The cubic root of 2013143808 is about 1262.6750523926.

The spelling of 2013143808 in words is "two billion, thirteen million, one hundred forty-three thousand, eight hundred eight".