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201250660 = 225131940739
BaseRepresentation
bin10111111111011…
…01011101100100
3112000200121000011
423333231131210
5403010010120
631545300004
74662413422
oct1377553544
9460617004
10201250660
11a3667666
1257494604
1332904640
141ca2a112
1512a04c5a
hexbfed764

201250660 has 48 divisors (see below), whose sum is σ = 479102400. Its totient is φ = 70395264.

The previous prime is 201250657. The next prime is 201250661. The reversal of 201250660 is 66052102.

It is not an unprimeable number, because it can be changed into a prime (201250661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15430 + ... + 25309.

It is an arithmetic number, because the mean of its divisors is an integer number (9981300).

Almost surely, 2201250660 is an apocalyptic number.

201250660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201250660 is an abundant number, since it is smaller than the sum of its proper divisors (277851740).

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

201250660 is a wasteful number, since it uses less digits than its factorization.

201250660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40780 (or 40778 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 201250660 is about 14186.2842210355. The cubic root of 201250660 is about 586.0199995504.

The spelling of 201250660 in words is "two hundred one million, two hundred fifty thousand, six hundred sixty".

Divisors: 1 2 4 5 10 13 19 20 26 38 52 65 76 95 130 190 247 260 380 494 988 1235 2470 4940 40739 81478 162956 203695 407390 529607 774041 814780 1059214 1548082 2118428 2648035 3096164 3870205 5296070 7740410 10062533 10592140 15480820 20125066 40250132 50312665 100625330 201250660