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201285072 = 243241103331
BaseRepresentation
bin10111111111101…
…01110111010000
3112000202100012200
423333311313100
5403012110242
631550123200
74662615642
oct1377656720
9460670180
10201285072
11a36904aa
12574b0500
13329171c1
141ca38892
1512a1004c
hexbff5dd0

201285072 has 120 divisors (see below), whose sum is σ = 584420928. Its totient is φ = 64627200.

The previous prime is 201285061. The next prime is 201285079. The reversal of 201285072 is 270582102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201285079) 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 23 ways as a sum of consecutive naturals, for example, 607947 + ... + 608277.

Almost surely, 2201285072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201285072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292210464).

201285072 is an abundant number, since it is smaller than the sum of its proper divisors (383135856).

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

201285072 is a wasteful number, since it uses less digits than its factorization.

201285072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 201285072 is about 14187.4970308367. The cubic root of 201285072 is about 586.0533989786.

It can be divided in two parts, 20128 and 5072, that added together give a triangular number (25200 = T224).

The spelling of 201285072 in words is "two hundred one million, two hundred eighty-five thousand, seventy-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 41 48 72 82 103 123 144 164 206 246 309 328 331 369 412 492 618 656 662 738 824 927 984 993 1236 1324 1476 1648 1854 1968 1986 2472 2648 2952 2979 3708 3972 4223 4944 5296 5904 5958 7416 7944 8446 11916 12669 13571 14832 15888 16892 23832 25338 27142 33784 34093 38007 40713 47664 50676 54284 67568 68186 76014 81426 101352 102279 108568 122139 136372 152028 162852 202704 204558 217136 244278 272744 304056 306837 325704 409116 488556 545488 608112 613674 651408 818232 977112 1227348 1397813 1636464 1954224 2454696 2795626 4193439 4909392 5591252 8386878 11182504 12580317 16773756 22365008 25160634 33547512 50321268 67095024 100642536 201285072