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131406192 = 24331729617
BaseRepresentation
bin1111101010100…
…01100101110000
3100011021010102000
413311101211300
5232114444232
621012254000
73153635301
oct765214560
9304233360
10131406192
11681a2465
1238011300
13212bb858
14136487a8
15b80a27c
hex7d51970

131406192 has 160 divisors (see below), whose sum is σ = 413812800. Its totient is φ = 39739392.

The previous prime is 131406169. The next prime is 131406193. The reversal of 131406192 is 291604131.

131406192 is a `hidden beast` number, since 1 + 3 + 1 + 40 + 619 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131406193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212668 + ... + 213284.

It is an arithmetic number, because the mean of its divisors is an integer number (2586330).

Almost surely, 2131406192 is an apocalyptic number.

131406192 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 131406192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206906400).

131406192 is an abundant number, since it is smaller than the sum of its proper divisors (282406608).

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

131406192 is a wasteful number, since it uses less digits than its factorization.

131406192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 131406192 is about 11463.2539882880. The cubic root of 131406192 is about 508.3996895789.

The spelling of 131406192 in words is "one hundred thirty-one million, four hundred six thousand, one hundred ninety-two".

Divisors: 1 2 3 4 6 8 9 12 16 17 18 24 27 29 34 36 48 51 54 58 68 72 87 102 108 116 136 144 153 174 204 216 232 261 272 306 348 408 432 459 464 493 522 612 617 696 783 816 918 986 1044 1224 1234 1392 1479 1566 1836 1851 1972 2088 2448 2468 2958 3132 3672 3702 3944 4176 4437 4936 5553 5916 6264 7344 7404 7888 8874 9872 10489 11106 11832 12528 13311 14808 16659 17748 17893 20978 22212 23664 26622 29616 31467 33318 35496 35786 41956 44424 53244 53679 62934 66636 70992 71572 83912 88848 94401 106488 107358 125868 133272 143144 161037 167824 188802 212976 214716 251736 266544 283203 286288 304181 322074 377604 429432 483111 503472 566406 608362 644148 755208 858864 912543 966222 1132812 1216724 1288296 1510416 1825086 1932444 2265624 2433448 2576592 2737629 3650172 3864888 4531248 4866896 5475258 7300344 7729776 8212887 10950516 14600688 16425774 21901032 32851548 43802064 65703096 131406192