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11381293 = 711791871
BaseRepresentation
bin101011011010…
…101000101101
3210102020012101
4223122220231
510403200133
61043535101
7165511420
oct53325055
923366171
1011381293
116473a30
12398a491
1324864c1
1417239b7
15eec37d
hexadaa2d

11381293 has 16 divisors (see below), whose sum is σ = 14376960. Its totient is φ = 8751600.

The previous prime is 11381261. The next prime is 11381299. The reversal of 11381293 is 39218311.

It is not a de Polignac number, because 11381293 - 25 = 11381261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11381299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5148 + ... + 7018.

It is an arithmetic number, because the mean of its divisors is an integer number (898560).

Almost surely, 211381293 is an apocalyptic number.

It is an amenable number.

11381293 is a deficient number, since it is larger than the sum of its proper divisors (2995667).

11381293 is a wasteful number, since it uses less digits than its factorization.

11381293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968.

The product of its digits is 1296, while the sum is 28.

The square root of 11381293 is about 3373.6171982014. The cubic root of 11381293 is about 224.9385379448.

It can be divided in two parts, 113 and 81293, that added together give a triangular number (81406 = T403).

The spelling of 11381293 in words is "eleven million, three hundred eighty-one thousand, two hundred ninety-three".

Divisors: 1 7 11 77 79 553 869 1871 6083 13097 20581 144067 147809 1034663 1625899 11381293