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120131188 = 2232579221
BaseRepresentation
bin1110010100100…
…00111001110100
322101001022000021
413022100321310
5221223144223
615530454524
72656045462
oct712207164
9271038007
10120131188
11618a1381
1234294444
131bb71858
1411d51832
15a82e65d
hex7290e74

120131188 has 12 divisors (see below), whose sum is σ = 210316932. Its totient is φ = 60040640.

The previous prime is 120131177. The next prime is 120131213. The reversal of 120131188 is 881131021.

It can be written as a sum of positive squares in 2 ways, for example, as 106750224 + 13380964 = 10332^2 + 3658^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8418 + ... + 17638.

It is an arithmetic number, because the mean of its divisors is an integer number (17526411).

Almost surely, 2120131188 is an apocalyptic number.

It is an amenable number.

120131188 is a deficient number, since it is larger than the sum of its proper divisors (90185744).

120131188 is a wasteful number, since it uses less digits than its factorization.

120131188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12482 (or 12480 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 120131188 is about 10960.4374000311. The cubic root of 120131188 is about 493.4220924219.

The spelling of 120131188 in words is "one hundred twenty million, one hundred thirty-one thousand, one hundred eighty-eight".

Divisors: 1 2 4 3257 6514 9221 13028 18442 36884 30032797 60065594 120131188