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488989620 = 223257255441
BaseRepresentation
bin11101001001010…
…110001110110100
31021002010020122200
4131021112032310
52000140131440
6120304424500
715055225500
oct3511261664
91232106580
10488989620
11231027159
12117918130
137a3cb692
1448d2b300
152cde0c30
hex1d2563b4

488989620 has 108 divisors (see below), whose sum is σ = 1725465924. Its totient is φ = 111767040.

The previous prime is 488989609. The next prime is 488989621. The reversal of 488989620 is 26989884.

488989620 is a `hidden beast` number, since 4 + 8 + 8 + 9 + 8 + 9 + 620 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 196784784 + 292204836 = 14028^2 + 17094^2 .

It is a super-2 number, since 2×4889896202 = 478221696935488800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (488989621) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18901 + ... + 36540.

Almost surely, 2488989620 is an apocalyptic number.

It is an amenable number.

488989620 is an abundant number, since it is smaller than the sum of its proper divisors (1236476304).

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

488989620 is a wasteful number, since it uses less digits than its factorization.

488989620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55470 (or 55458 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The square root of 488989620 is about 22113.1096863376. The cubic root of 488989620 is about 787.8312680374.

The spelling of 488989620 in words is "four hundred eighty-eight million, nine hundred eighty-nine thousand, six hundred twenty".

Divisors: 1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 28 30 35 36 42 45 49 60 63 70 84 90 98 105 126 140 147 180 196 210 245 252 294 315 420 441 490 588 630 735 882 980 1260 1470 1764 2205 2940 4410 8820 55441 110882 166323 221764 277205 332646 388087 498969 554410 665292 776174 831615 997938 1108820 1164261 1552348 1663230 1940435 1995876 2328522 2494845 2716609 3326460 3492783 3880870 4657044 4989690 5433218 5821305 6985566 7761740 8149827 9979380 10866436 11642610 13583045 13971132 16299654 17463915 23285220 24449481 27166090 32599308 34927830 40749135 48898962 54332180 69855660 81498270 97797924 122247405 162996540 244494810 488989620