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13262081 = 71894583
BaseRepresentation
bin110010100101…
…110100000001
3220221210011012
4302211310001
511343341311
61152130305
7220503650
oct62456401
926853135
1013262081
117538aa8
124536995
1329945b1
141a93197
15126e78b
hexca5d01

13262081 has 4 divisors (see below), whose sum is σ = 15156672. Its totient is φ = 11367492.

The previous prime is 13262063. The next prime is 13262083. The reversal of 13262081 is 18026231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18026231 = 19948749.

It is a cyclic number.

It is not a de Polignac number, because 13262081 - 218 = 12999937 is a prime.

It is a super-2 number, since 2×132620812 = 351765584901122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13262083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 947285 + ... + 947298.

It is an arithmetic number, because the mean of its divisors is an integer number (3789168).

Almost surely, 213262081 is an apocalyptic number.

It is an amenable number.

13262081 is a deficient number, since it is larger than the sum of its proper divisors (1894591).

13262081 is an equidigital number, since it uses as much as digits as its factorization.

13262081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894590.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 13262081 is about 3641.7140195243. The cubic root of 13262081 is about 236.7030707297.

The spelling of 13262081 in words is "thirteen million, two hundred sixty-two thousand, eighty-one".

Divisors: 1 7 1894583 13262081