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13290263 = 71898609
BaseRepresentation
bin110010101100…
…101100010111
3221000012210222
4302230230113
511400242023
61152504555
7220652060
oct62545427
927005728
1013290263
117558198
12454b15b
1329a437c
141a9d567
151277cc8
hexcacb17

13290263 has 4 divisors (see below), whose sum is σ = 15188880. Its totient is φ = 11391648.

The previous prime is 13290239. The next prime is 13290283. The reversal of 13290263 is 36209231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13290263 - 216 = 13224727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13290223) 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 3 ways as a sum of consecutive naturals, for example, 949298 + ... + 949311.

It is an arithmetic number, because the mean of its divisors is an integer number (3797220).

Almost surely, 213290263 is an apocalyptic number.

13290263 is a deficient number, since it is larger than the sum of its proper divisors (1898617).

13290263 is an equidigital number, since it uses as much as digits as its factorization.

13290263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898616.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 13290263 is about 3645.5812979551. The cubic root of 13290263 is about 236.8706172450.

Adding to 13290263 its reverse (36209231), we get a palindrome (49499494).

The spelling of 13290263 in words is "thirteen million, two hundred ninety thousand, two hundred sixty-three".

Divisors: 1 7 1898609 13290263