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72125352 = 233213251307
BaseRepresentation
bin1000100110010…
…00101110101000
312000201100101100
410103020232220
5121431002402
611053521400
71534024665
oct423105650
9160640340
1072125352
1137792932
12201a3260
1311c34030
149816a6c
1564ea71c
hex44c8ba8

72125352 has 96 divisors (see below), whose sum is σ = 211891680. Its totient is φ = 22032000.

The previous prime is 72125351. The next prime is 72125353. The reversal of 72125352 is 25352127.

It is an interprime number because it is at equal distance from previous prime (72125351) and next prime (72125353).

It is a super-2 number, since 2×721253522 = 10404132802247808, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (72125351) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 234783 + ... + 235089.

It is an arithmetic number, because the mean of its divisors is an integer number (2207205).

Almost surely, 272125352 is an apocalyptic number.

72125352 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72125352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105945840).

72125352 is an abundant number, since it is smaller than the sum of its proper divisors (139766328).

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

72125352 is a wasteful number, since it uses less digits than its factorization.

72125352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583 (or 576 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 72125352 is about 8492.6645995235. The cubic root of 72125352 is about 416.2580530325.

Adding to 72125352 its reverse (25352127), we get a palindrome (97477479).

The spelling of 72125352 in words is "seventy-two million, one hundred twenty-five thousand, three hundred fifty-two".

Divisors: 1 2 3 4 6 8 9 12 13 18 24 26 36 39 52 72 78 104 117 156 234 251 307 312 468 502 614 753 921 936 1004 1228 1506 1842 2008 2259 2456 2763 3012 3263 3684 3991 4518 5526 6024 6526 7368 7982 9036 9789 11052 11973 13052 15964 18072 19578 22104 23946 26104 29367 31928 35919 39156 47892 58734 71838 77057 78312 95784 117468 143676 154114 231171 234936 287352 308228 462342 616456 693513 924684 1001741 1387026 1849368 2003482 2774052 3005223 4006964 5548104 6010446 8013928 9015669 12020892 18031338 24041784 36062676 72125352