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13263089 = 71894727
BaseRepresentation
bin110010100110…
…000011110001
3220221211112112
4302212003301
511343404324
61152135105
7220506620
oct62460361
926854475
1013263089
117539834
124537495
132994ba8
141a936b7
15126ec0e
hexca60f1

13263089 has 4 divisors (see below), whose sum is σ = 15157824. Its totient is φ = 11368356.

The previous prime is 13263079. The next prime is 13263113. The reversal of 13263089 is 98036231.

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: 98036231 = 155363127.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13263089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13263079) 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 3 ways as a sum of consecutive naturals, for example, 947357 + ... + 947370.

It is an arithmetic number, because the mean of its divisors is an integer number (3789456).

Almost surely, 213263089 is an apocalyptic number.

It is an amenable number.

13263089 is a deficient number, since it is larger than the sum of its proper divisors (1894735).

13263089 is an equidigital number, since it uses as much as digits as its factorization.

13263089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1894734.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 13263089 is about 3641.8524132644. The cubic root of 13263089 is about 236.7090675425.

The spelling of 13263089 in words is "thirteen million, two hundred sixty-three thousand, eighty-nine".

Divisors: 1 7 1894727 13263089