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487802920 = 235111139811
BaseRepresentation
bin11101000100110…
…100100000101000
31020222212221210211
4131010310200220
51444334143140
6120223150504
715042153643
oct3504644050
91228787724
10487802920
11230396610
12117445434
137a0a44a7
1448adca5a
152cc592ea
hex1d134828

487802920 has 64 divisors (see below), whose sum is σ = 1208053440. Its totient is φ = 175795200.

The previous prime is 487802899. The next prime is 487802921. The reversal of 487802920 is 29208784.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (487802921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44815 + ... + 54625.

It is an arithmetic number, because the mean of its divisors is an integer number (18875835).

Almost surely, 2487802920 is an apocalyptic number.

487802920 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 487802920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (604026720).

487802920 is an abundant number, since it is smaller than the sum of its proper divisors (720250520).

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

487802920 is a wasteful number, since it uses less digits than its factorization.

487802920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9946 (or 9942 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 487802920 is about 22086.2608877103. The cubic root of 487802920 is about 787.1934380787.

The spelling of 487802920 in words is "four hundred eighty-seven million, eight hundred two thousand, nine hundred twenty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 113 220 226 440 452 565 904 1130 1243 2260 2486 4520 4972 6215 9811 9944 12430 19622 24860 39244 49055 49720 78488 98110 107921 196220 215842 392440 431684 539605 863368 1079210 1108643 2158420 2217286 4316840 4434572 5543215 8869144 11086430 12195073 22172860 24390146 44345720 48780292 60975365 97560584 121950730 243901460 487802920