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489457913780 = 225112396730813
BaseRepresentation
bin1110001111101011111…
…01110000111110110100
31201210101011102020121202
413013311331300332310
531004402211220110
61012504233432032
750235136423163
oct7076575607664
91653334366552
10489457913780
1117963a261050
127aa3a56b618
1337204061234
14199930b13da
15caea3970a5
hex71f5f70fb4

489457913780 has 48 divisors (see below), whose sum is σ = 1170055926144. Its totient is φ = 170246229120.

The previous prime is 489457913761. The next prime is 489457913851. The reversal of 489457913780 is 87319754984.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48360347 + ... + 48370466.

It is an arithmetic number, because the mean of its divisors is an integer number (24376165128).

Almost surely, 2489457913780 is an apocalyptic number.

It is an amenable number.

489457913780 is an abundant number, since it is smaller than the sum of its proper divisors (680598012364).

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

489457913780 is a wasteful number, since it uses less digits than its factorization.

489457913780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96730856 (or 96730854 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 65.

The spelling of 489457913780 in words is "four hundred eighty-nine billion, four hundred fifty-seven million, nine hundred thirteen thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 11 20 22 23 44 46 55 92 110 115 220 230 253 460 506 1012 1265 2530 5060 96730813 193461626 386923252 483654065 967308130 1064038943 1934616260 2128077886 2224808699 4256155772 4449617398 5320194715 8899234796 10640389430 11124043495 21280778860 22248086990 24472895689 44496173980 48945791378 97891582756 122364478445 244728956890 489457913780