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13290648 = 233779111
BaseRepresentation
bin110010101100…
…110010011000
3221000020100020
4302230302120
511400300043
61152510440
7220653150
oct62546230
927006306
1013290648
117558508
12454b420
1329a45b7
141a9d760
151277e83
hexcacc98

13290648 has 32 divisors (see below), whose sum is σ = 37973760. Its totient is φ = 3797280.

The previous prime is 13290647. The next prime is 13290713. The reversal of 13290648 is 84609231.

It is a super-3 number, since 3×132906483 (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13290647) 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 7 ways as a sum of consecutive naturals, for example, 39388 + ... + 39723.

It is an arithmetic number, because the mean of its divisors is an integer number (1186680).

Almost surely, 213290648 is an apocalyptic number.

It is an amenable number.

13290648 is an abundant number, since it is smaller than the sum of its proper divisors (24683112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13290648 is a wasteful number, since it uses less digits than its factorization.

13290648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79127 (or 79123 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 13290648 is about 3645.6341012230. The cubic root of 13290648 is about 236.8729044911.

Adding to 13290648 its reverse (84609231), we get a palindrome (97899879).

The spelling of 13290648 in words is "thirteen million, two hundred ninety thousand, six hundred forty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 79111 158222 237333 316444 474666 553777 632888 949332 1107554 1661331 1898664 2215108 3322662 4430216 6645324 13290648