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2131708864 = 26251132701
BaseRepresentation
bin111111100001111…
…0100101111000000
312111120012000211011
41333003310233000
513331204140424
6551305530304
7103553140435
oct17703645700
95446160734
102131708864
119a432646a
124b5aa3994
1327c8408bc
14163181b8c
15c722c694
hex7f0f4bc0

2131708864 has 28 divisors (see below), whose sum is σ = 4246994808. Its totient is φ = 1061600000.

The previous prime is 2131708853. The next prime is 2131708877. The reversal of 2131708864 is 4688071312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50287 + ... + 82414.

It is an arithmetic number, because the mean of its divisors is an integer number (151678386).

Almost surely, 22131708864 is an apocalyptic number.

It is an amenable number.

2131708864 is a deficient number, since it is larger than the sum of its proper divisors (2115285944).

2131708864 is a wasteful number, since it uses less digits than its factorization.

2131708864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132964 (or 132954 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 2131708864 is about 46170.4327898277. The cubic root of 2131708864 is about 1286.9923448567.

The spelling of 2131708864 in words is "two billion, one hundred thirty-one million, seven hundred eight thousand, eight hundred sixty-four".

Divisors: 1 2 4 8 16 32 64 251 502 1004 2008 4016 8032 16064 132701 265402 530804 1061608 2123216 4246432 8492864 33307951 66615902 133231804 266463608 532927216 1065854432 2131708864