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131374872 = 2334296991
BaseRepresentation
bin1111101010010…
…01111100011000
3100011012112110000
413311021330120
5232112443442
621011453000
73153445056
oct765117430
9304175400
10131374872
1168180982
1237bb7160
13212aa515
141363b1d6
15b800d4c
hex7d49f18

131374872 has 80 divisors (see below), whose sum is σ = 380714400. Its totient is φ = 42275520.

The previous prime is 131374871. The next prime is 131374883. The reversal of 131374872 is 278473131.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131374871) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15297 + ... + 22287.

It is an arithmetic number, because the mean of its divisors is an integer number (4758930).

Almost surely, 2131374872 is an apocalyptic number.

131374872 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 131374872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190357200).

131374872 is an abundant number, since it is smaller than the sum of its proper divisors (249339528).

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

131374872 is a wasteful number, since it uses less digits than its factorization.

131374872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7038 (or 7025 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 131374872 is about 11461.8878026266. The cubic root of 131374872 is about 508.3592948728.

The spelling of 131374872 in words is "one hundred thirty-one million, three hundred seventy-four thousand, eight hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 29 36 54 58 72 81 87 108 116 162 174 216 232 261 324 348 522 648 696 783 1044 1566 2088 2349 3132 4698 6264 6991 9396 13982 18792 20973 27964 41946 55928 62919 83892 125838 167784 188757 202739 251676 377514 405478 503352 566271 608217 755028 810956 1132542 1216434 1510056 1621912 1824651 2265084 2432868 3649302 4530168 4865736 5473953 7298604 10947906 14597208 16421859 21895812 32843718 43791624 65687436 131374872