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13087444100 = 2252497326317
BaseRepresentation
bin11000011000001001…
…01000110010000100
31020210002100001012212
430030010220302010
5203300341202400
610002353202552
7642214303463
oct141404506204
936702301185
1013087444100
115606580505
122652b60458
13130753a483
148c220c9da
15518e76335
hex30c128c84

13087444100 has 36 divisors (see below), whose sum is σ = 28406543844. Its totient is φ = 5233726080.

The previous prime is 13087444091. The next prime is 13087444103. The reversal of 13087444100 is 144478031.

It can be written as a sum of positive squares in 6 ways, for example, as 541696 + 13086902404 = 736^2 + 114398^2 .

It is not an unprimeable number, because it can be changed into a prime (13087444103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 484142 + ... + 510458.

Almost surely, 213087444100 is an apocalyptic number.

13087444100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13087444100 is an abundant number, since it is smaller than the sum of its proper divisors (15319099744).

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

13087444100 is a wasteful number, since it uses less digits than its factorization.

13087444100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31304 (or 31297 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The spelling of 13087444100 in words is "thirteen billion, eighty-seven million, four hundred forty-four thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 4973 9946 19892 24865 26317 49730 52634 99460 105268 124325 131585 248650 263170 497300 526340 657925 1315850 2631700 130874441 261748882 523497764 654372205 1308744410 2617488820 3271861025 6543722050 13087444100