Search a number
-
+
12841280520 = 2335107010671
BaseRepresentation
bin10111111010110011…
…00110010000001000
31020010221010122021020
423331121212100020
5202244331434040
65522121112440
7633135040425
oct137531462010
936127118236
1012841280520
11549a628132
1225a4628720
13129853c053
1489b650d4c
1550254dcd0
hex2fd666408

12841280520 has 32 divisors (see below), whose sum is σ = 38523841920. Its totient is φ = 3424341440.

The previous prime is 12841280519. The next prime is 12841280527. The reversal of 12841280520 is 2508214821.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12841280527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53505216 + ... + 53505455.

It is an arithmetic number, because the mean of its divisors is an integer number (1203870060).

Almost surely, 212841280520 is an apocalyptic number.

12841280520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12841280520 is an abundant number, since it is smaller than the sum of its proper divisors (25682561400).

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

12841280520 is a wasteful number, since it uses less digits than its factorization.

12841280520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107010685 (or 107010681 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 33.

The spelling of 12841280520 in words is "twelve billion, eight hundred forty-one million, two hundred eighty thousand, five hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 107010671 214021342 321032013 428042684 535053355 642064026 856085368 1070106710 1284128052 1605160065 2140213420 2568256104 3210320130 4280426840 6420640260 12841280520