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487618242 = 231719251609
BaseRepresentation
bin11101000100000…
…111011011000010
31020222112120110220
4131010013123002
51444312240432
6120215203510
715040454346
oct3504073302
91228476426
10487618242
1123027a891
12117376596
137a03b407
1448a91626
152cc1e72c
hex1d1076c2

487618242 has 32 divisors (see below), whose sum is σ = 1086955200. Its totient is φ = 144926208.

The previous prime is 487618217. The next prime is 487618247. The reversal of 487618242 is 242816784.

It is a junction number, because it is equal to n+sod(n) for n = 487618194 and 487618203.

It is not an unprimeable number, because it can be changed into a prime (487618247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123867 + ... + 127742.

It is an arithmetic number, because the mean of its divisors is an integer number (33967350).

Almost surely, 2487618242 is an apocalyptic number.

487618242 is an abundant number, since it is smaller than the sum of its proper divisors (599336958).

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

487618242 is a wasteful number, since it uses less digits than its factorization.

487618242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251650.

The product of its digits is 172032, while the sum is 42.

The square root of 487618242 is about 22082.0796574960. The cubic root of 487618242 is about 787.0940839791.

The spelling of 487618242 in words is "four hundred eighty-seven million, six hundred eighteen thousand, two hundred forty-two".

Divisors: 1 2 3 6 17 19 34 38 51 57 102 114 323 646 969 1938 251609 503218 754827 1509654 4277353 4780571 8554706 9561142 12832059 14341713 25664118 28683426 81269707 162539414 243809121 487618242