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47988620 = 225172931157
BaseRepresentation
bin1011011100001…
…1111110001100
310100022002000022
42313003332030
544241113440
64432321312
71121616341
oct267037614
9110262008
1047988620
11250a7619
12140a3238
139c32a44
1465327c8
15432dcb5
hex2dc3f8c

47988620 has 96 divisors (see below), whose sum is σ = 114670080. Its totient is φ = 16773120.

The previous prime is 47988617. The next prime is 47988631. The reversal of 47988620 is 2688974.

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, 305582 + ... + 305738.

It is an arithmetic number, because the mean of its divisors is an integer number (1194480).

Almost surely, 247988620 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 47988620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57335040).

47988620 is an abundant number, since it is smaller than the sum of its proper divisors (66681460).

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

47988620 is a wasteful number, since it uses less digits than its factorization.

47988620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 47988620 is about 6927.3819008338. The cubic root of 47988620 is about 363.3953956959.

The spelling of 47988620 in words is "forty-seven million, nine hundred eighty-eight thousand, six hundred twenty".

Divisors: 1 2 4 5 10 17 20 29 31 34 58 62 68 85 116 124 145 155 157 170 290 310 314 340 493 527 580 620 628 785 899 986 1054 1570 1798 1972 2108 2465 2635 2669 3140 3596 4495 4553 4867 4930 5270 5338 8990 9106 9734 9860 10540 10676 13345 15283 17980 18212 19468 22765 24335 26690 30566 45530 48670 53380 61132 76415 77401 82739 91060 97340 141143 152830 154802 165478 282286 305660 309604 330956 387005 413695 564572 705715 774010 827390 1411430 1548020 1654780 2399431 2822860 4798862 9597724 11997155 23994310 47988620