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287997000470 = 2573394516439
BaseRepresentation
bin1000011000011011111…
…01010111101100010110
31000112101000011110210222
410030031331113230112
514204304213003340
6340145355114342
726543556053534
oct4141575275426
91015330143728
10287997000470
11101158887083
12479957429b2
1321209186a1a
14dd20d83154
157758a498b5
hex430df57b16

287997000470 has 16 divisors (see below), whose sum is σ = 525495898080. Its totient is φ = 113620734144.

The previous prime is 287997000439. The next prime is 287997000517. The reversal of 287997000470 is 74000799782.

It is a Curzon number.

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, 197257490 + ... + 197258949.

It is an arithmetic number, because the mean of its divisors is an integer number (32843493630).

Almost surely, 2287997000470 is an apocalyptic number.

287997000470 is a deficient number, since it is larger than the sum of its proper divisors (237498897610).

287997000470 is a wasteful number, since it uses less digits than its factorization.

287997000470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394516519.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 287997000470 in words is "two hundred eighty-seven billion, nine hundred ninety-seven million, four hundred seventy", and thus it is an aban number.

Divisors: 1 2 5 10 73 146 365 730 394516439 789032878 1972582195 3945164390 28799700047 57599400094 143998500235 287997000470