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12730089957 = 3131719200739
BaseRepresentation
bin10111101101100010…
…11100000111100101
31012212011220120111020
423312301130013211
5202032400334312
65503110001353
7630314656614
oct136661340745
935764816436
1012730089957
115442893002
122573346259
13127b4aab10
1488a98987b
154e78d878c
hex2f6c5c1e5

12730089957 has 16 divisors (see below), whose sum is σ = 19354345920. Its totient is φ = 7373083392.

The previous prime is 12730089949. The next prime is 12730089961. The reversal of 12730089957 is 75998003721.

It is not a de Polignac number, because 12730089957 - 23 = 12730089949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12730089997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9599707 + ... + 9601032.

It is an arithmetic number, because the mean of its divisors is an integer number (1209646620).

Almost surely, 212730089957 is an apocalyptic number.

12730089957 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12730089957 is a deficient number, since it is larger than the sum of its proper divisors (6624255963).

12730089957 is a wasteful number, since it uses less digits than its factorization.

12730089957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19200772.

The product of its (nonzero) digits is 952560, while the sum is 51.

The spelling of 12730089957 in words is "twelve billion, seven hundred thirty million, eighty-nine thousand, nine hundred fifty-seven".

Divisors: 1 3 13 17 39 51 221 663 19200739 57602217 249609607 326412563 748828821 979237689 4243363319 12730089957