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488660820 = 223579103093
BaseRepresentation
bin11101001000000…
…101111101010100
31021001111112121220
4131020011331110
52000044121240
6120253410340
715052356054
oct3510057524
91231445556
10488660820
1123092211a
121177999b0
137a314b1b
1448c83564
152cd785d0
hex1d205f54

488660820 has 48 divisors (see below), whose sum is σ = 1385583360. Its totient is φ = 128658816.

The previous prime is 488660771. The next prime is 488660831. The reversal of 488660820 is 28066884.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

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, 46807 + ... + 56286.

It is an arithmetic number, because the mean of its divisors is an integer number (28866320).

Almost surely, 2488660820 is an apocalyptic number.

It is an amenable number.

488660820 is an abundant number, since it is smaller than the sum of its proper divisors (896922540).

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

488660820 is a wasteful number, since it uses less digits than its factorization.

488660820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103184 (or 103182 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 488660820 is about 22105.6739322736. The cubic root of 488660820 is about 787.6546473813.

The spelling of 488660820 in words is "four hundred eighty-eight million, six hundred sixty thousand, eight hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 79 158 237 316 395 474 790 948 1185 1580 2370 4740 103093 206186 309279 412372 515465 618558 1030930 1237116 1546395 2061860 3092790 6185580 8144347 16288694 24433041 32577388 40721735 48866082 81443470 97732164 122165205 162886940 244330410 488660820