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13310988 = 2231109249
BaseRepresentation
bin110010110001…
…110000001100
3221001021020120
4302301300030
511401422423
61153144540
7221066355
oct62616014
927037216
1013310988
117571819
12455b150
1329b0932
141aa6d2c
15127dee3
hexcb1c0c

13310988 has 12 divisors (see below), whose sum is σ = 31059000. Its totient is φ = 4436992.

The previous prime is 13310939. The next prime is 13310989. The reversal of 13310988 is 88901331.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×133109882 = 354364803072288, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13310989) 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, 554613 + ... + 554636.

It is an arithmetic number, because the mean of its divisors is an integer number (2588250).

Almost surely, 213310988 is an apocalyptic number.

It is an amenable number.

13310988 is an abundant number, since it is smaller than the sum of its proper divisors (17748012).

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

13310988 is a wasteful number, since it uses less digits than its factorization.

13310988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109256 (or 1109254 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 13310988 is about 3648.4226728821. The cubic root of 13310988 is about 236.9936796192.

The spelling of 13310988 in words is "thirteen million, three hundred ten thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 12 1109249 2218498 3327747 4436996 6655494 13310988