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12542880 = 253573733
BaseRepresentation
bin101111110110…
…001110100000
3212121020121010
4233312032200
511202333010
61124500520
7211420110
oct57661640
925536533
1012542880
117097719
12424a740
1327a212c
141947040
15117b620
hexbf63a0

12542880 has 96 divisors (see below), whose sum is σ = 45166464. Its totient is φ = 2866176.

The previous prime is 12542863. The next prime is 12542891. The reversal of 12542880 is 8824521.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1494 + ... + 5226.

It is an arithmetic number, because the mean of its divisors is an integer number (470484).

Almost surely, 212542880 is an apocalyptic number.

12542880 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 12542880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22583232).

12542880 is an abundant number, since it is smaller than the sum of its proper divisors (32623584).

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

12542880 is a wasteful number, since it uses less digits than its factorization.

12542880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3758 (or 3750 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 12542880 is about 3541.5928619761. The cubic root of 12542880 is about 232.3445139156.

The spelling of 12542880 in words is "twelve million, five hundred forty-two thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 56 60 70 80 84 96 105 112 120 140 160 168 210 224 240 280 336 420 480 560 672 840 1120 1680 3360 3733 7466 11199 14932 18665 22398 26131 29864 37330 44796 52262 55995 59728 74660 78393 89592 104524 111990 119456 130655 149320 156786 179184 209048 223980 261310 298640 313572 358368 391965 418096 447960 522620 597280 627144 783930 836192 895920 1045240 1254288 1567860 1791840 2090480 2508576 3135720 4180960 6271440 12542880