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13288560 = 2435173257
BaseRepresentation
bin110010101100…
…010001110000
3221000010110220
4302230101300
511400213220
61152453040
7220644105
oct62542160
927003426
1013288560
11755698a
12454a180
1329a366c
141a9caac
151277540
hexcac470

13288560 has 80 divisors (see below), whose sum is σ = 43631136. Its totient is φ = 3334144.

The previous prime is 13288529. The next prime is 13288567. The reversal of 13288560 is 6588231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13288567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2452 + ... + 5708.

Almost surely, 213288560 is an apocalyptic number.

13288560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13288560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21815568).

13288560 is an abundant number, since it is smaller than the sum of its proper divisors (30342576).

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

13288560 is a wasteful number, since it uses less digits than its factorization.

13288560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3290 (or 3284 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 13288560 is about 3645.3477200399. The cubic root of 13288560 is about 236.8604993641.

The spelling of 13288560 in words is "thirteen million, two hundred eighty-eight thousand, five hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 17 20 24 30 34 40 48 51 60 68 80 85 102 120 136 170 204 240 255 272 340 408 510 680 816 1020 1360 2040 3257 4080 6514 9771 13028 16285 19542 26056 32570 39084 48855 52112 55369 65140 78168 97710 110738 130280 156336 166107 195420 221476 260560 276845 332214 390840 442952 553690 664428 781680 830535 885904 1107380 1328856 1661070 2214760 2657712 3322140 4429520 6644280 13288560