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13061880 = 23325132791
BaseRepresentation
bin110001110100…
…111011111000
3220120121112100
4301310323320
511320440010
61143543400
7216011166
oct61647370
926517470
1013061880
117411647
12445ab60
132924430
141a40236
1512302c0
hexc74ef8

13061880 has 96 divisors (see below), whose sum is σ = 45732960. Its totient is φ = 3214080.

The previous prime is 13061857. The next prime is 13061891. The reversal of 13061880 is 8816031.

It is a super-2 number, since 2×130618802 = 341225418268800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3285 + ... + 6075.

It is an arithmetic number, because the mean of its divisors is an integer number (476385).

Almost surely, 213061880 is an apocalyptic number.

13061880 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 13061880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22866480).

13061880 is an abundant number, since it is smaller than the sum of its proper divisors (32671080).

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

13061880 is a wasteful number, since it uses less digits than its factorization.

13061880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821 (or 2814 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 13061880 is about 3614.1223000889. The cubic root of 13061880 is about 235.5059568185.

The spelling of 13061880 in words is "thirteen million, sixty-one thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 13 15 18 20 24 26 30 36 39 40 45 52 60 65 72 78 90 104 117 120 130 156 180 195 234 260 312 360 390 468 520 585 780 936 1170 1560 2340 2791 4680 5582 8373 11164 13955 16746 22328 25119 27910 33492 36283 41865 50238 55820 66984 72566 83730 100476 108849 111640 125595 145132 167460 181415 200952 217698 251190 290264 326547 334920 362830 435396 502380 544245 653094 725660 870792 1004760 1088490 1306188 1451320 1632735 2176980 2612376 3265470 4353960 6530940 13061880