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13286280 = 2335715817
BaseRepresentation
bin110010101011…
…101110001000
3221000000100110
4302223232020
511400130110
61152434320
7220634340
oct62535610
927000313
1013286280
1175551a7
1245489a0
1329a2607
141a9bd20
151276a20
hexcabb88

13286280 has 64 divisors (see below), whose sum is σ = 45555840. Its totient is φ = 3036672.

The previous prime is 13286267. The next prime is 13286291. The reversal of 13286280 is 8268231.

13286280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7069 + ... + 8748.

It is an arithmetic number, because the mean of its divisors is an integer number (711810).

Almost surely, 213286280 is an apocalyptic number.

13286280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13286280 is an abundant number, since it is smaller than the sum of its proper divisors (32269560).

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

13286280 is a wasteful number, since it uses less digits than its factorization.

13286280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15838 (or 15834 counting only the distinct ones).

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

The square root of 13286280 is about 3645.0349792560. The cubic root of 13286280 is about 236.8469520516.

The spelling of 13286280 in words is "thirteen million, two hundred eighty-six thousand, two hundred eighty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 35 40 42 56 60 70 84 105 120 140 168 210 280 420 840 15817 31634 47451 63268 79085 94902 110719 126536 158170 189804 221438 237255 316340 332157 379608 442876 474510 553595 632680 664314 885752 949020 1107190 1328628 1660785 1898040 2214380 2657256 3321570 4428760 6643140 13286280