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487391520 = 253571113187
BaseRepresentation
bin11101000011010…
…000000100100000
31020222010001110210
4131003100010200
51444233012040
6120210254120
715035521350
oct3503200440
91228101423
10487391520
11230135510
12117287340
1379c8c165
1448a32b60
152cbc7480
hex1d0d0120

487391520 has 192 divisors, whose sum is σ = 1914264576. Its totient is φ = 101268480.

The previous prime is 487391519. The next prime is 487391533. The reversal of 487391520 is 25193784.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30367 + ... + 43553.

It is an arithmetic number, because the mean of its divisors is an integer number (9970128).

Almost surely, 2487391520 is an apocalyptic number.

487391520 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 487391520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (957132288).

487391520 is an abundant number, since it is smaller than the sum of its proper divisors (1426873056).

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

487391520 is a wasteful number, since it uses less digits than its factorization.

487391520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13223 (or 13215 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 487391520 is about 22076.9454408892. The cubic root of 487391520 is about 786.9720765053.

The spelling of 487391520 in words is "four hundred eighty-seven million, three hundred ninety-one thousand, five hundred twenty".