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201960288 = 25323122621
BaseRepresentation
bin11000000100110…
…10101101100000
3112002000122102200
430002122231200
5403200212123
632012413200
75001430335
oct1402325540
9462018380
10201960288
11a4001832
1257777200
1332ac263a
141cb7298c
1512ae5143
hexc09ab60

201960288 has 72 divisors (see below), whose sum is σ = 592877376. Its totient is φ = 65145600.

The previous prime is 201960277. The next prime is 201960347. The reversal of 201960288 is 882069102.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2383 + ... + 20238.

It is an arithmetic number, because the mean of its divisors is an integer number (8234408).

Almost surely, 2201960288 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 201960288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296438688).

201960288 is an abundant number, since it is smaller than the sum of its proper divisors (390917088).

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

201960288 is a wasteful number, since it uses less digits than its factorization.

201960288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22668 (or 22657 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 201960288 is about 14211.2732715967. The cubic root of 201960288 is about 586.7079780367.

It can be divided in two parts, 20196028 and 8, that added together give a square (20196036 = 44942).

The spelling of 201960288 in words is "two hundred one million, nine hundred sixty thousand, two hundred eighty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 31 32 36 48 62 72 93 96 124 144 186 248 279 288 372 496 558 744 992 1116 1488 2232 2976 4464 8928 22621 45242 67863 90484 135726 180968 203589 271452 361936 407178 542904 701251 723872 814356 1085808 1402502 1628712 2103753 2171616 2805004 3257424 4207506 5610008 6311259 6514848 8415012 11220016 12622518 16830024 22440032 25245036 33660048 50490072 67320096 100980144 201960288