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11271258890 = 2512731128537
BaseRepresentation
bin10100111111101000…
…11100001100001010
31002002111212021110222
422133310130030022
5141040420241030
65102234110042
7546212056043
oct123764341412
932074767428
1011271258890
1148643716a1
12222687b322
1310a81a1478
1478cd218ca
1545e7c23e5
hex29fd1c30a

11271258890 has 32 divisors (see below), whose sum is σ = 20514484224. Its totient is φ = 4458464640.

The previous prime is 11271258839. The next prime is 11271258899. The reversal of 11271258890 is 9885217211.

11271258890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11271258899) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 380702 + ... + 409238.

It is an arithmetic number, because the mean of its divisors is an integer number (641077632).

Almost surely, 211271258890 is an apocalyptic number.

11271258890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11271258890 is a deficient number, since it is larger than the sum of its proper divisors (9243225334).

11271258890 is a wasteful number, since it uses less digits than its factorization.

11271258890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28982.

The product of its (nonzero) digits is 80640, while the sum is 44.

The spelling of 11271258890 in words is "eleven billion, two hundred seventy-one million, two hundred fifty-eight thousand, eight hundred ninety".

Divisors: 1 2 5 10 127 254 311 622 635 1270 1555 3110 28537 39497 57074 78994 142685 197485 285370 394970 3624199 7248398 8875007 17750014 18120995 36241990 44375035 88750070 1127125889 2254251778 5635629445 11271258890