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131040672 = 25371091789
BaseRepresentation
bin1111100111110…
…00010110100000
3100010120120000020
413303320112200
5232021300142
621000353440
73150553530
oct763702640
9303516006
10131040672
1167a72884
1237a75880
13211c1379
14135914c0
15b786cec
hex7cf85a0

131040672 has 96 divisors (see below), whose sum is σ = 396950400. Its totient is φ = 37075968.

The previous prime is 131040671. The next prime is 131040673. The reversal of 131040672 is 276040131.

It is an interprime number because it is at equal distance from previous prime (131040671) and next prime (131040673).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-3 number, since 3×1310406723 (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (131040671) 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, 72354 + ... + 74142.

It is an arithmetic number, because the mean of its divisors is an integer number (4134900).

Almost surely, 2131040672 is an apocalyptic number.

131040672 is a gapful number since it is divisible by the number (12) 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 131040672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198475200).

131040672 is an abundant number, since it is smaller than the sum of its proper divisors (265909728).

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

131040672 is a wasteful number, since it uses less digits than its factorization.

131040672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918 (or 1910 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 131040672 is about 11447.2997689411. The cubic root of 131040672 is about 507.9278629460.

The spelling of 131040672 in words is "one hundred thirty-one million, forty thousand, six hundred seventy-two".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 84 96 109 112 168 218 224 327 336 436 654 672 763 872 1308 1526 1744 1789 2289 2616 3052 3488 3578 4578 5232 5367 6104 7156 9156 10464 10734 12208 12523 14312 18312 21468 24416 25046 28624 36624 37569 42936 50092 57248 73248 75138 85872 100184 150276 171744 195001 200368 300552 390002 400736 585003 601104 780004 1170006 1202208 1365007 1560008 2340012 2730014 3120016 4095021 4680024 5460028 6240032 8190042 9360048 10920056 16380084 18720096 21840112 32760168 43680224 65520336 131040672