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13127880 = 2335313529
BaseRepresentation
bin110010000101…
…000011001000
3220200222001210
4302011003020
511330043010
61145213120
7216404463
oct62050310
926628053
1013127880
117457197
1244911a0
13294849c
141a5a2da
151244b20
hexc850c8

13127880 has 64 divisors (see below), whose sum is σ = 40665600. Its totient is φ = 3386880.

The previous prime is 13127843. The next prime is 13127887. The reversal of 13127880 is 8872131.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (13127887) 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, 1956 + ... + 5484.

It is an arithmetic number, because the mean of its divisors is an integer number (635400).

Almost surely, 213127880 is an apocalyptic number.

13127880 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 13127880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20332800).

13127880 is an abundant number, since it is smaller than the sum of its proper divisors (27537720).

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

13127880 is a wasteful number, since it uses less digits than its factorization.

13127880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3574 (or 3570 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 13127880 is about 3623.2416425074. The cubic root of 13127880 is about 235.9019510349.

The spelling of 13127880 in words is "thirteen million, one hundred twenty-seven thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 31 40 60 62 93 120 124 155 186 248 310 372 465 620 744 930 1240 1860 3529 3720 7058 10587 14116 17645 21174 28232 35290 42348 52935 70580 84696 105870 109399 141160 211740 218798 328197 423480 437596 546995 656394 875192 1093990 1312788 1640985 2187980 2625576 3281970 4375960 6563940 13127880