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13213488 = 2431716193
BaseRepresentation
bin110010011001…
…111100110000
3220212022111110
4302121330300
511340312423
61151113320
7220212201
oct62317460
926768443
1013213488
117505542
124512840
132978442
141a7d5a8
151260193
hexc99f30

13213488 has 40 divisors (see below), whose sum is σ = 36145008. Its totient is φ = 4145152.

The previous prime is 13213481. The next prime is 13213507. The reversal of 13213488 is 88431231.

13213488 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×132134882 = 349192530252288, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (13213481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7281 + ... + 8912.

Almost surely, 213213488 is an apocalyptic number.

It is an amenable number.

13213488 is an abundant number, since it is smaller than the sum of its proper divisors (22931520).

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

13213488 is a wasteful number, since it uses less digits than its factorization.

13213488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16221 (or 16215 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 13213488 is about 3635.0361758860. The cubic root of 13213488 is about 236.4136191947.

The spelling of 13213488 in words is "thirteen million, two hundred thirteen thousand, four hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 16 17 24 34 48 51 68 102 136 204 272 408 816 16193 32386 48579 64772 97158 129544 194316 259088 275281 388632 550562 777264 825843 1101124 1651686 2202248 3303372 4404496 6606744 13213488