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12730796880 = 243553044987
BaseRepresentation
bin10111101101101000…
…01000101101010000
31012212020020111012120
423312310020231100
5202033041000010
65503133054240
7630323662614
oct136664105520
935766214176
1012730796880
11544322613a
122573627380
13127b697809
1488aad1344
154e79c7e70
hex2f6d08b50

12730796880 has 40 divisors (see below), whose sum is σ = 39465471072. Its totient is φ = 3394879104.

The previous prime is 12730796857. The next prime is 12730796891. The reversal of 12730796880 is 8869703721.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26522254 + ... + 26522733.

Almost surely, 212730796880 is an apocalyptic number.

12730796880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12730796880 is an abundant number, since it is smaller than the sum of its proper divisors (26734674192).

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

12730796880 is a wasteful number, since it uses less digits than its factorization.

12730796880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53045003 (or 53044997 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 12730796880 in words is "twelve billion, seven hundred thirty million, seven hundred ninety-six thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 53044987 106089974 159134961 212179948 265224935 318269922 424359896 530449870 636539844 795674805 848719792 1060899740 1273079688 1591349610 2121799480 2546159376 3182699220 4243598960 6365398440 12730796880