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15680254460 = 22513314214621
BaseRepresentation
bin11101001101001110…
…11011000111111100
31111110210011110101012
432212213123013330
5224103121120320
611111534134352
71063366651403
oct164647330774
944423143335
1015680254460
116717105292
1230573513b8
13162b763aa0
14a8a6dc63a
1561b8d64c5
hex3a69db1fc

15680254460 has 96 divisors (see below), whose sum is σ = 36700306944. Its totient is φ = 5588352000.

The previous prime is 15680254423. The next prime is 15680254477. The reversal of 15680254460 is 6445208651.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3390950 + ... + 3395570.

It is an arithmetic number, because the mean of its divisors is an integer number (382294864).

Almost surely, 215680254460 is an apocalyptic number.

15680254460 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 15680254460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18350153472).

15680254460 is an abundant number, since it is smaller than the sum of its proper divisors (21020052484).

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

15680254460 is a wasteful number, since it uses less digits than its factorization.

15680254460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5095 (or 5093 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 15680254460 in words is "fifteen billion, six hundred eighty million, two hundred fifty-four thousand, four hundred sixty".

Divisors: 1 2 4 5 10 13 20 26 31 52 62 65 124 130 155 260 310 403 421 620 806 842 1612 1684 2015 2105 4030 4210 4621 5473 8060 8420 9242 10946 13051 18484 21892 23105 26102 27365 46210 52204 54730 60073 65255 92420 109460 120146 130510 143251 169663 240292 261020 286502 300365 339326 573004 600730 678652 716255 848315 1201460 1432510 1696630 1862263 1945441 2865020 3393260 3724526 3890882 7449052 7781764 9311315 9727205 18622630 19454410 25290733 37245260 38908820 50581466 60308671 101162932 120617342 126453665 241234684 252907330 301543355 505814660 603086710 784012723 1206173420 1568025446 3136050892 3920063615 7840127230 15680254460