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487539280 = 245232571031
BaseRepresentation
bin11101000011110…
…100001001010000
31020222101120011101
4131003310021100
51444302224110
6120213354144
715040005214
oct3503641120
91228346141
10487539280
11230226528
12117338954
137a0114a7
1448a70944
152cc0613a
hex1d0f4250

487539280 has 80 divisors (see below), whose sum is σ = 1188566784. Its totient is φ = 185630720.

The previous prime is 487539251. The next prime is 487539293. The reversal of 487539280 is 82935784.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 487539280.

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, 472365 + ... + 473395.

Almost surely, 2487539280 is an apocalyptic number.

487539280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 487539280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594283392).

487539280 is an abundant number, since it is smaller than the sum of its proper divisors (701027504).

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

487539280 is a wasteful number, since it uses less digits than its factorization.

487539280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324 (or 1318 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 487539280 is about 22080.2916647403. The cubic root of 487539280 is about 787.0515959062.

The spelling of 487539280 in words is "four hundred eighty-seven million, five hundred thirty-nine thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 23 40 46 80 92 115 184 230 257 368 460 514 920 1028 1031 1285 1840 2056 2062 2570 4112 4124 5140 5155 5911 8248 10280 10310 11822 16496 20560 20620 23644 23713 29555 41240 47288 47426 59110 82480 94576 94852 118220 118565 189704 236440 237130 264967 379408 472880 474260 529934 948520 1059868 1324835 1897040 2119736 2649670 4239472 5299340 6094241 10598680 12188482 21197360 24376964 30471205 48753928 60942410 97507856 121884820 243769640 487539280