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12870890138932 = 2272330197661849
BaseRepresentation
bin1011101101001011110011…
…0101011010110100110100
31200120110000110112000201021
42323102330311122310310
53141334040333421212
643212445540110524
72465614441032310
oct273227465326464
950513013460637
1012870890138932
114112571a38181
12153a56b095444
13724948336a17
14326d50c6ab40
15174c04a53307
hexbb4bcd5ad34

12870890138932 has 48 divisors (see below), whose sum is σ = 26861918227200. Its totient is φ = 5276082822912.

The previous prime is 12870890138927. The next prime is 12870890138933. The reversal of 12870890138932 is 23983109807821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12870890138933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19115944 + ... + 19777792.

It is an arithmetic number, because the mean of its divisors is an integer number (559623296400).

Almost surely, 212870890138932 is an apocalyptic number.

It is an amenable number.

12870890138932 is an abundant number, since it is smaller than the sum of its proper divisors (13991028088268).

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

12870890138932 is a wasteful number, since it uses less digits than its factorization.

12870890138932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692080 (or 692078 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 61.

The spelling of 12870890138932 in words is "twelve trillion, eight hundred seventy billion, eight hundred ninety million, one hundred thirty-eight thousand, nine hundred thirty-two".

Divisors: 1 2 4 7 14 23 28 46 92 161 322 644 30197 60394 120788 211379 422758 661849 694531 845516 1323698 1389062 2647396 2778124 4632943 4861717 9265886 9723434 15222527 18531772 19446868 30445054 60890108 106557689 213115378 426230756 19985854253 39971708506 79943417012 139900979771 279801959542 459674647819 559603919084 919349295638 1838698591276 3217722534733 6435445069466 12870890138932