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280048990012 = 221123713897581
BaseRepresentation
bin1000001001101000011…
…10000111011100111100
3222202212002120201011021
410010310032013130330
514042020020140022
6332352553433524
726142606065431
oct4046416073474
9882762521137
10280048990012
11a884a3991a0
1246337a0b8a4
132054064775c
14d7a956db88
157440dbd7c7
hex413438773c

280048990012 has 48 divisors (see below), whose sum is σ = 565741822464. Its totient is φ = 120045464000.

The previous prime is 280048990007. The next prime is 280048990021. The reversal of 280048990012 is 210099840082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1876939 + ... + 2020642.

It is an arithmetic number, because the mean of its divisors is an integer number (11786287968).

Almost surely, 2280048990012 is an apocalyptic number.

280048990012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

280048990012 is an abundant number, since it is smaller than the sum of its proper divisors (285692832452).

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

280048990012 is a wasteful number, since it uses less digits than its factorization.

280048990012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3897690 (or 3897688 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 280048990012 in words is "two hundred eighty billion, forty-eight million, nine hundred ninety thousand, twelve".

Divisors: 1 2 4 11 22 23 44 46 71 92 142 253 284 506 781 1012 1562 1633 3124 3266 6532 17963 35926 71852 3897581 7795162 15590324 42873391 85746782 89644363 171493564 179288726 276728251 358577452 553456502 986087993 1106913004 1972175986 3044010761 3944351972 6088021522 6364749773 12176043044 12729499546 25458999092 70012247503 140024495006 280048990012