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12757739600 = 245231894349
BaseRepresentation
bin10111110000110101…
…11010100001010000
31012221002221022200002
423320122322201100
5202111440131400
65505534345132
7631101666044
oct137032724120
935832838602
1012757739600
115457458651
12258065b1a8
13128413c058
14890506024
154ea04aed5
hex2f86ba850

12757739600 has 30 divisors (see below), whose sum is σ = 30650470350. Its totient is φ = 5103095680.

The previous prime is 12757739581. The next prime is 12757739609. The reversal of 12757739600 is 693775721.

It can be written as a sum of positive squares in 3 ways, for example, as 2537338384 + 10220401216 = 50372^2 + 101096^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12757739609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15946775 + ... + 15947574.

It is an arithmetic number, because the mean of its divisors is an integer number (1021682345).

Almost surely, 212757739600 is an apocalyptic number.

12757739600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12757739600 is an abundant number, since it is smaller than the sum of its proper divisors (17892730750).

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

12757739600 is a wasteful number, since it uses less digits than its factorization.

12757739600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31894367 (or 31894356 counting only the distinct ones).

The product of its (nonzero) digits is 555660, while the sum is 47.

The spelling of 12757739600 in words is "twelve billion, seven hundred fifty-seven million, seven hundred thirty-nine thousand, six hundred".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 100 200 400 31894349 63788698 127577396 159471745 255154792 318943490 510309584 637886980 797358725 1275773960 1594717450 2551547920 3189434900 6378869800 12757739600