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13319680 = 29511243
BaseRepresentation
bin110010110011…
…111000000000
3221001201011111
4302303320000
511402212210
61153253104
7221133613
oct62637000
927051144
1013319680
117578300
124564194
1329b488a
141aaa17a
15128188a
hexcb3e00

13319680 has 120 divisors (see below), whose sum is σ = 35919576. Its totient is φ = 4730880.

The previous prime is 13319641. The next prime is 13319689. The reversal of 13319680 is 8691331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13319689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 309739 + ... + 309781.

Almost surely, 213319680 is an apocalyptic number.

13319680 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 13319680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17959788).

13319680 is an abundant number, since it is smaller than the sum of its proper divisors (22599896).

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

13319680 is an equidigital number, since it uses as much as digits as its factorization.

13319680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 13319680 is about 3649.6136781857. The cubic root of 13319680 is about 237.0452535732.

It can be divided in two parts, 1331 and 9680, that added together give a palindrome (11011).

The spelling of 13319680 in words is "thirteen million, three hundred nineteen thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 43 44 55 64 80 86 88 110 121 128 160 172 176 215 220 242 256 320 344 352 430 440 473 484 512 605 640 688 704 860 880 946 968 1210 1280 1376 1408 1720 1760 1892 1936 2365 2420 2560 2752 2816 3440 3520 3784 3872 4730 4840 5203 5504 5632 6880 7040 7568 7744 9460 9680 10406 11008 13760 14080 15136 15488 18920 19360 20812 22016 26015 27520 28160 30272 30976 37840 38720 41624 52030 55040 60544 61952 75680 77440 83248 104060 110080 121088 151360 154880 166496 208120 242176 302720 309760 332992 416240 605440 665984 832480 1210880 1331968 1664960 2663936 3329920 6659840 13319680