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13264280 = 2351931563
BaseRepresentation
bin110010100110…
…010110011000
3220221220011122
4302212112120
511343424110
61152144412
7220513241
oct62462630
926856148
1013264280
11753a717
124538108
1329955b3
141a93cc8
151270255
hexca6598

13264280 has 64 divisors (see below), whose sum is σ = 32486400. Its totient is φ = 4855680.

The previous prime is 13264271. The next prime is 13264289. The reversal of 13264280 is 8246231.

It is an interprime number because it is at equal distance from previous prime (13264271) and next prime (13264289).

It is a super-2 number, since 2×132642802 = 351882247836800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13264289) 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 15 ways as a sum of consecutive naturals, for example, 23279 + ... + 23841.

It is an arithmetic number, because the mean of its divisors is an integer number (507600).

Almost surely, 213264280 is an apocalyptic number.

13264280 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 13264280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16243200).

13264280 is an abundant number, since it is smaller than the sum of its proper divisors (19222120).

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

13264280 is a wasteful number, since it uses less digits than its factorization.

13264280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 13264280 is about 3642.0159252809. The cubic root of 13264280 is about 236.7161526708.

The spelling of 13264280 in words is "thirteen million, two hundred sixty-four thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 19 20 31 38 40 62 76 95 124 152 155 190 248 310 380 563 589 620 760 1126 1178 1240 2252 2356 2815 2945 4504 4712 5630 5890 10697 11260 11780 17453 21394 22520 23560 34906 42788 53485 69812 85576 87265 106970 139624 174530 213940 331607 349060 427880 663214 698120 1326428 1658035 2652856 3316070 6632140 13264280