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3885980 = 225741677
BaseRepresentation
bin1110110100101110011100
321022102120012
432310232130
51443322410
6215142352
745013250
oct16645634
97272505
103885980
11221465a
1213749b8
13a609c7
14732260
1551b605
hex3b4b9c

3885980 has 48 divisors (see below), whose sum is σ = 9567936. Its totient is φ = 1297920.

The previous prime is 3885967. The next prime is 3885983. The reversal of 3885980 is 895883.

3885980 = T83 + T84 + ... + T287.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3885983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5402 + ... + 6078.

It is an arithmetic number, because the mean of its divisors is an integer number (199332).

Almost surely, 23885980 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 3885980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4783968).

3885980 is an abundant number, since it is smaller than the sum of its proper divisors (5681956).

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

3885980 is a wasteful number, since it uses less digits than its factorization.

3885980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 3885980 is about 1971.2889184490. The cubic root of 3885980 is about 157.2172469514.

The spelling of 3885980 in words is "three million, eight hundred eighty-five thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 41 70 82 140 164 205 287 410 574 677 820 1148 1354 1435 2708 2870 3385 4739 5740 6770 9478 13540 18956 23695 27757 47390 55514 94780 111028 138785 194299 277570 388598 555140 777196 971495 1942990 3885980