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4131880 = 235531949
BaseRepresentation
bin1111110000110000101000
321202220212121
433300300220
52024210010
6224321024
750056204
oct17606050
97686777
104131880
112372385
121473174
13b188cc
14797b04
155693da
hex3f0c28

4131880 has 32 divisors (see below), whose sum is σ = 9477000. Its totient is φ = 1620736.

The previous prime is 4131877. The next prime is 4131889. The reversal of 4131880 is 881314.

It can be written as a sum of positive squares in 4 ways, for example, as 3992004 + 139876 = 1998^2 + 374^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4131889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1146 + ... + 3094.

Almost surely, 24131880 is an apocalyptic number.

4131880 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 4131880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4738500).

4131880 is an abundant number, since it is smaller than the sum of its proper divisors (5345120).

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

4131880 is a wasteful number, since it uses less digits than its factorization.

4131880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013 (or 2009 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 4131880 is about 2032.7026344254. The cubic root of 4131880 is about 160.4658299492.

The spelling of 4131880 in words is "four million, one hundred thirty-one thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 53 106 212 265 424 530 1060 1949 2120 3898 7796 9745 15592 19490 38980 77960 103297 206594 413188 516485 826376 1032970 2065940 4131880