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72263260 = 22517257827
BaseRepresentation
bin1000100111010…
…10011001011100
312000222100120001
410103222121130
5121444411020
611100504044
71535141026
oct423523134
9160870501
1072263260
1137877503
122024b024
1311c81a34
149851016
15652650a
hex44ea65c

72263260 has 48 divisors (see below), whose sum is σ = 161499744. Its totient is φ = 27066368.

The previous prime is 72263237. The next prime is 72263267. The reversal of 72263260 is 6236227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72263267) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 86967 + ... + 87793.

It is an arithmetic number, because the mean of its divisors is an integer number (3364578).

Almost surely, 272263260 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 72263260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80749872).

72263260 is an abundant number, since it is smaller than the sum of its proper divisors (89236484).

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

72263260 is a wasteful number, since it uses less digits than its factorization.

72263260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 72263260 is about 8500.7799642150. The cubic root of 72263260 is about 416.5231875765.

Adding to 72263260 its reverse (6236227), we get a palindrome (78499487).

The spelling of 72263260 in words is "seventy-two million, two hundred sixty-three thousand, two hundred sixty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 257 340 514 827 1028 1285 1654 2570 3308 4135 4369 5140 8270 8738 14059 16540 17476 21845 28118 43690 56236 70295 87380 140590 212539 281180 425078 850156 1062695 2125390 3613163 4250780 7226326 14452652 18065815 36131630 72263260