Search a number
-
+
12757055200 = 255223966721
BaseRepresentation
bin10111110000110000…
…10011011011100000
31012221001122112211221
423320120103123200
5202111301231300
65505511544424
7631063115521
oct137030233340
935831575757
1012757055200
11545703042a
12258038b114
131283c5c696
148903a8848
154e9e6331a
hex2f86136e0

12757055200 has 72 divisors (see below), whose sum is σ = 31273935840. Its totient is φ = 5081395200.

The previous prime is 12757055191. The next prime is 12757055209. The reversal of 12757055200 is 255075721.

It is an interprime number because it is at equal distance from previous prime (12757055191) and next prime (12757055209).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12757055209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157840 + ... + 224560.

It is an arithmetic number, because the mean of its divisors is an integer number (434360220).

Almost surely, 212757055200 is an apocalyptic number.

12757055200 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 12757055200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15636967920).

12757055200 is an abundant number, since it is smaller than the sum of its proper divisors (18516880640).

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

12757055200 is a wasteful number, since it uses less digits than its factorization.

12757055200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66980 (or 66967 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 34.

The spelling of 12757055200 in words is "twelve billion, seven hundred fifty-seven million, fifty-five thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 160 200 239 400 478 800 956 1195 1912 2390 3824 4780 5975 7648 9560 11950 19120 23900 38240 47800 66721 95600 133442 191200 266884 333605 533768 667210 1067536 1334420 1668025 2135072 2668840 3336050 5337680 6672100 10675360 13344200 15946319 26688400 31892638 53376800 63785276 79731595 127570552 159463190 255141104 318926380 398657975 510282208 637852760 797315950 1275705520 1594631900 2551411040 3189263800 6378527600 12757055200