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120131232 = 2531396259
BaseRepresentation
bin1110010100100…
…00111010100000
322101001022001220
413022100322200
5221223144412
615530455040
72656045554
oct712207240
9271038056
10120131232
11618a1411
1234294480
131bb71890
1411d51864
15a82e68c
hex7290ea0

120131232 has 48 divisors (see below), whose sum is σ = 339605280. Its totient is φ = 36963072.

The previous prime is 120131227. The next prime is 120131233. The reversal of 120131232 is 232131021.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (120131233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46882 + ... + 49377.

It is an arithmetic number, because the mean of its divisors is an integer number (7075110).

Almost surely, 2120131232 is an apocalyptic number.

120131232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120131232 is an abundant number, since it is smaller than the sum of its proper divisors (219474048).

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

120131232 is a wasteful number, since it uses less digits than its factorization.

120131232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96285 (or 96277 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 120131232 is about 10960.4394072501. The cubic root of 120131232 is about 493.4221526632.

Adding to 120131232 its reverse (232131021), we get a palindrome (352262253).

The spelling of 120131232 in words is "one hundred twenty million, one hundred thirty-one thousand, two hundred thirty-two".

Divisors: 1 2 3 4 6 8 12 13 16 24 26 32 39 48 52 78 96 104 156 208 312 416 624 1248 96259 192518 288777 385036 577554 770072 1155108 1251367 1540144 2310216 2502734 3080288 3754101 4620432 5005468 7508202 9240864 10010936 15016404 20021872 30032808 40043744 60065616 120131232