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447988460 = 225197914923
BaseRepresentation
bin11010101100111…
…100001011101100
31011012222011122012
4122230330023230
51404141112320
6112241540352
714046560543
oct3254741354
91135864565
10447988460
1120a9723a7
121060446b8
1371a7423a
14436d715a
15294e24c5
hex1ab3c2ec

447988460 has 48 divisors (see below), whose sum is σ = 1002892800. Its totient is φ = 167603904.

The previous prime is 447988439. The next prime is 447988469. The reversal of 447988460 is 64889744.

It is a junction number, because it is equal to n+sod(n) for n = 447988399 and 447988408.

It is not an unprimeable number, because it can be changed into a prime (447988469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22559 + ... + 37481.

It is an arithmetic number, because the mean of its divisors is an integer number (20893600).

Almost surely, 2447988460 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 447988460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501446400).

447988460 is an abundant number, since it is smaller than the sum of its proper divisors (554904340).

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

447988460 is a wasteful number, since it uses less digits than its factorization.

447988460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15030 (or 15028 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 50.

The square root of 447988460 is about 21165.7378798850. The cubic root of 447988460 is about 765.1659030448.

The spelling of 447988460 in words is "four hundred forty-seven million, nine hundred eighty-eight thousand, four hundred sixty".

Divisors: 1 2 4 5 10 19 20 38 76 79 95 158 190 316 380 395 790 1501 1580 3002 6004 7505 14923 15010 29846 30020 59692 74615 149230 283537 298460 567074 1134148 1178917 1417685 2357834 2835370 4715668 5670740 5894585 11789170 22399423 23578340 44798846 89597692 111997115 223994230 447988460