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13048993 = 39732869
BaseRepresentation
bin110001110001…
…110010100001
3220112221212001
4301301302201
511320031433
61143404001
7215625466
oct61616241
926487761
1013048993
1174029a1
124453601
13291b5c9
141a3966d
15122b57d
hexc71ca1

13048993 has 4 divisors (see below), whose sum is σ = 13082260. Its totient is φ = 13015728.

The previous prime is 13048963. The next prime is 13048999. The reversal of 13048993 is 39984031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39984031 = 94142491.

It can be written as a sum of positive squares in 2 ways, for example, as 8133904 + 4915089 = 2852^2 + 2217^2 .

It is a cyclic number.

It is not a de Polignac number, because 13048993 - 25 = 13048961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13048999) 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, 16038 + ... + 16831.

It is an arithmetic number, because the mean of its divisors is an integer number (3270565).

Almost surely, 213048993 is an apocalyptic number.

It is an amenable number.

13048993 is a deficient number, since it is larger than the sum of its proper divisors (33267).

13048993 is an equidigital number, since it uses as much as digits as its factorization.

13048993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33266.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 13048993 is about 3612.3389929518. The cubic root of 13048993 is about 235.4284803776.

It can be divided in two parts, 13048 and 993, that added together give a palindrome (14041).

The spelling of 13048993 in words is "thirteen million, forty-eight thousand, nine hundred ninety-three".

Divisors: 1 397 32869 13048993