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12785486448 = 2437334711369
BaseRepresentation
bin10111110100001001…
…10000101001110000
31020000001011000012010
423322010300221300
5202141041031243
65512405202520
7631556561460
oct137204605160
936001130163
1012785486448
11547108a229
122589a00440
131289b055c7
14894089ba0
154ec6cc433
hex2fa130a70

12785486448 has 80 divisors (see below), whose sum is σ = 37762225920. Its totient is φ = 3651583488.

The previous prime is 12785486431. The next prime is 12785486449. The reversal of 12785486448 is 84468458721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12785486449) 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, 1118908 + ... + 1130276.

It is an arithmetic number, because the mean of its divisors is an integer number (472027824).

Almost surely, 212785486448 is an apocalyptic number.

It is an amenable number.

12785486448 is an abundant number, since it is smaller than the sum of its proper divisors (24976739472).

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

12785486448 is a wasteful number, since it uses less digits than its factorization.

12785486448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14734 (or 14728 counting only the distinct ones).

The product of its digits is 13762560, while the sum is 57.

The spelling of 12785486448 in words is "twelve billion, seven hundred eighty-five million, four hundred eighty-six thousand, four hundred forty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 42 48 56 84 112 168 336 3347 6694 10041 11369 13388 20082 22738 23429 26776 34107 40164 45476 46858 53552 68214 70287 79583 80328 90952 93716 136428 140574 159166 160656 181904 187432 238749 272856 281148 318332 374864 477498 545712 562296 636664 954996 1124592 1273328 1909992 3819984 38052043 76104086 114156129 152208172 228312258 266364301 304416344 456624516 532728602 608832688 799092903 913249032 1065457204 1598185806 1826498064 2130914408 3196371612 4261828816 6392743224 12785486448