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47390980 = 22571322003
BaseRepresentation
bin1011010011001…
…0000100000100
310022011201012111
42310302010010
544113002410
64411430404
71113550060
oct264620404
9108151174
1047390980
11248295aa
1213a55404
139a83a00
146418aa0
154261b8a
hex2d32104

47390980 has 72 divisors (see below), whose sum is σ = 123221952. Its totient is φ = 14990976.

The previous prime is 47390977. The next prime is 47390989. The reversal of 47390980 is 8909374.

It is not an unprimeable number, because it can be changed into a prime (47390989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22659 + ... + 24661.

It is an arithmetic number, because the mean of its divisors is an integer number (1711416).

Almost surely, 247390980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47390980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61610976).

47390980 is an abundant number, since it is smaller than the sum of its proper divisors (75830972).

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

47390980 is a wasteful number, since it uses less digits than its factorization.

47390980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045 (or 2030 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 47390980 is about 6884.1106905685. The cubic root of 47390980 is about 361.8805401335.

The spelling of 47390980 in words is "forty-seven million, three hundred ninety thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 13 14 20 26 28 35 52 65 70 91 130 140 169 182 260 338 364 455 676 845 910 1183 1690 1820 2003 2366 3380 4006 4732 5915 8012 10015 11830 14021 20030 23660 26039 28042 40060 52078 56084 70105 104156 130195 140210 182273 260390 280420 338507 364546 520780 677014 729092 911365 1354028 1692535 1822730 2369549 3385070 3645460 4739098 6770140 9478196 11847745 23695490 47390980