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47491080 = 23357134349
BaseRepresentation
bin1011010100101…
…0100000001000
310022100210111220
42311022200020
544124203310
64413522040
71114444650
oct265124010
9108323456
1047491080
112489782a
1213aa3320
139aba440
146443360
154281670
hex2d4a808

47491080 has 128 divisors (see below), whose sum is σ = 175392000. Its totient is φ = 10017792.

The previous prime is 47491063. The next prime is 47491097. The reversal of 47491080 is 8019474.

It is an interprime number because it is at equal distance from previous prime (47491063) and next prime (47491097).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8746 + ... + 13094.

It is an arithmetic number, because the mean of its divisors is an integer number (1370250).

Almost surely, 247491080 is an apocalyptic number.

47491080 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47491080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87696000).

47491080 is an abundant number, since it is smaller than the sum of its proper divisors (127900920).

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

47491080 is a wasteful number, since it uses less digits than its factorization.

47491080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4383 (or 4379 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 47491080 is about 6891.3772208464. The cubic root of 47491080 is about 362.1351509439.

The spelling of 47491080 in words is "forty-seven million, four hundred ninety-one thousand, eighty".

Divisors: 1 2 3 4 5 6 7 8 10 12 13 14 15 20 21 24 26 28 30 35 39 40 42 52 56 60 65 70 78 84 91 104 105 120 130 140 156 168 182 195 210 260 273 280 312 364 390 420 455 520 546 728 780 840 910 1092 1365 1560 1820 2184 2730 3640 4349 5460 8698 10920 13047 17396 21745 26094 30443 34792 43490 52188 56537 60886 65235 86980 91329 104376 113074 121772 130470 152215 169611 173960 182658 226148 243544 260940 282685 304430 339222 365316 395759 452296 456645 521880 565370 608860 678444 730632 791518 848055 913290 1130740 1187277 1217720 1356888 1583036 1696110 1826580 1978795 2261480 2374554 3166072 3392220 3653160 3957590 4749108 5936385 6784440 7915180 9498216 11872770 15830360 23745540 47491080