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131492 = 2271463
BaseRepresentation
bin100000000110100100
320200101002
4200012210
513201432
62452432
71055234
oct400644
9220332
10131492
118a879
1264118
1347b0a
1435cc4
1528e62
hex201a4

131492 has 12 divisors (see below), whose sum is σ = 233856. Its totient is φ = 64680.

The previous prime is 131489. The next prime is 131497. The reversal of 131492 is 294131.

It is a d-powerful number, because it can be written as 1 + 34 + 44 + 1 + 92 + 217 .

It is not an unprimeable number, because it can be changed into a prime (131497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53 + ... + 515.

It is an arithmetic number, because the mean of its divisors is an integer number (19488).

2131492 is an apocalyptic number.

It is an amenable number.

131492 is a deficient number, since it is larger than the sum of its proper divisors (102364).

131492 is a wasteful number, since it uses less digits than its factorization.

131492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 536 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

The square root of 131492 is about 362.6182565729. The cubic root of 131492 is about 50.8510326852.

The spelling of 131492 in words is "one hundred thirty-one thousand, four hundred ninety-two".

Divisors: 1 2 4 71 142 284 463 926 1852 32873 65746 131492