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12480924880 = 2452931173539
BaseRepresentation
bin10111001111110101…
…11100110011010000
31012012211001200021001
423213322330303100
5201030104044010
65422245311344
7621201053044
oct134772746320
935184050231
1012480924880
11532517a656
122503a05554
13123b99b468
1486584a024
154d0abbc3a
hex2e7ebccd0

12480924880 has 80 divisors (see below), whose sum is σ = 30987302400. Its totient is φ = 4664701440.

The previous prime is 12480924853. The next prime is 12480924941. The reversal of 12480924880 is 8842908421.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 12480924880.

It is a congruent number.

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, 14850 + ... + 158689.

It is an arithmetic number, because the mean of its divisors is an integer number (387341280).

Almost surely, 212480924880 is an apocalyptic number.

12480924880 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 12480924880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15493651200).

12480924880 is an abundant number, since it is smaller than the sum of its proper divisors (18506377520).

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

12480924880 is a wasteful number, since it uses less digits than its factorization.

12480924880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173612 (or 173606 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 46.

The spelling of 12480924880 in words is "twelve billion, four hundred eighty million, nine hundred twenty-four thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 29 31 40 58 62 80 116 124 145 155 232 248 290 310 464 496 580 620 899 1160 1240 1798 2320 2480 3596 4495 7192 8990 14384 17980 35960 71920 173539 347078 694156 867695 1388312 1735390 2776624 3470780 5032631 5379709 6941560 10065262 10759418 13883120 20130524 21518836 25163155 26898545 40261048 43037672 50326310 53797090 80522096 86075344 100652620 107594180 156011561 201305240 215188360 312023122 402610480 430376720 624046244 780057805 1248092488 1560115610 2496184976 3120231220 6240462440 12480924880