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2987813630 = 251555119213
BaseRepresentation
bin1011001000010110…
…0110101011111110
321201020002122210002
42302011212223332
522104340014010
61212251114302
7134016665624
oct26205465376
97636078702
102987813630
1112a35a766a
126b4742992
13388008779
14204b53514
151274881a5
hexb2166afe

2987813630 has 16 divisors (see below), whose sum is σ = 5378690304. Its totient is φ = 1194986400.

The previous prime is 2987813629. The next prime is 2987813639. The reversal of 2987813630 is 363187892.

It is a super-2 number, since 2×29878136302 = 17854060575227553800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2987813639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145904 + ... + 165116.

It is an arithmetic number, because the mean of its divisors is an integer number (336168144).

Almost surely, 22987813630 is an apocalyptic number.

2987813630 is a deficient number, since it is larger than the sum of its proper divisors (2390876674).

2987813630 is a wasteful number, since it uses less digits than its factorization.

2987813630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34771.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 2987813630 is about 54660.8967178549. The cubic root of 2987813630 is about 1440.2940548533.

The spelling of 2987813630 in words is "two billion, nine hundred eighty-seven million, eight hundred thirteen thousand, six hundred thirty".

Divisors: 1 2 5 10 15551 19213 31102 38426 77755 96065 155510 192130 298781363 597562726 1493906815 2987813630