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488963690 = 25175354269
BaseRepresentation
bin11101001001001…
…111111001101010
31021002001221002022
4131021033321222
52000133314230
6120304104442
715055060055
oct3511177152
91232057068
10488963690
11231009726
12117905122
137a3bc937
1448d21a9c
152cdd81e5
hex1d24fe6a

488963690 has 32 divisors (see below), whose sum is σ = 949507920. Its totient is φ = 180603904.

The previous prime is 488963687. The next prime is 488963731. The reversal of 488963690 is 96369884.

It can be written as a sum of positive squares in 8 ways, for example, as 427951969 + 61011721 = 20687^2 + 7811^2 .

It is a super-2 number, since 2×4889636902 = 478170980276832200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18125 + ... + 36144.

Almost surely, 2488963690 is an apocalyptic number.

488963690 is a deficient number, since it is larger than the sum of its proper divisors (460544230).

488963690 is a wasteful number, since it uses less digits than its factorization.

488963690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54346.

The product of its (nonzero) digits is 2239488, while the sum is 53.

The square root of 488963690 is about 22112.5233747757. The cubic root of 488963690 is about 787.8173421618.

The spelling of 488963690 in words is "four hundred eighty-eight million, nine hundred sixty-three thousand, six hundred ninety".

Divisors: 1 2 5 10 17 34 53 85 106 170 265 530 901 1802 4505 9010 54269 108538 271345 542690 922573 1845146 2876257 4612865 5752514 9225730 14381285 28762570 48896369 97792738 244481845 488963690