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487541890 = 251161113643
BaseRepresentation
bin11101000011110…
…100110010000010
31020222101200202001
4131003310302002
51444302320030
6120213414214
715040015633
oct3503646202
91228350661
10487541890
11230228490
1211733a36a
137a012734
1448a7188a
152cc06cca
hex1d0f4c82

487541890 has 64 divisors (see below), whose sum is σ = 983187072. Its totient is φ = 172569600.

The previous prime is 487541863. The next prime is 487541891. The reversal of 487541890 is 98145784.

487541890 = T2348 + T2349 + ... + T2512.

It is a self number, because there is not a number n which added to its sum of digits gives 487541890.

It is not an unprimeable number, because it can be changed into a prime (487541891) 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 31 ways as a sum of consecutive naturals, for example, 757909 + ... + 758551.

It is an arithmetic number, because the mean of its divisors is an integer number (15362298).

Almost surely, 2487541890 is an apocalyptic number.

487541890 is an abundant number, since it is smaller than the sum of its proper divisors (495645182).

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

487541890 is a wasteful number, since it uses less digits than its factorization.

487541890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835.

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 487541890 is about 22080.3507671414. The cubic root of 487541890 is about 787.0530003750.

The spelling of 487541890 in words is "four hundred eighty-seven million, five hundred forty-one thousand, eight hundred ninety".

Divisors: 1 2 5 10 11 22 55 61 110 113 122 226 305 565 610 643 671 1130 1243 1286 1342 2486 3215 3355 6215 6430 6710 6893 7073 12430 13786 14146 34465 35365 39223 68930 70730 72659 75823 78446 145318 151646 196115 363295 379115 392230 431453 726590 758230 799249 862906 1598498 2157265 3996245 4314530 4432199 7992490 8864398 22160995 44321990 48754189 97508378 243770945 487541890