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7252140 = 2235731557
BaseRepresentation
bin11011101010100010101100
3111122110001210
4123222202230
53324032030
6415234420
7115433160
oct33524254
914573053
107252140
114103705
122518a10
13166bc0c
14d6aca0
15983bb0
hex6ea8ac

7252140 has 96 divisors (see below), whose sum is σ = 23998464. Its totient is φ = 1601280.

The previous prime is 7252087. The next prime is 7252151. The reversal of 7252140 is 412527.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12742 + ... + 13298.

It is an arithmetic number, because the mean of its divisors is an integer number (249984).

Almost surely, 27252140 is an apocalyptic number.

7252140 is a gapful number since it is divisible by the number (70) 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 7252140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11999232).

7252140 is an abundant number, since it is smaller than the sum of its proper divisors (16746324).

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

7252140 is a wasteful number, since it uses less digits than its factorization.

7252140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607 (or 605 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 7252140 is about 2692.9797622708. The cubic root of 7252140 is about 193.5628730914.

Adding to 7252140 its reverse (412527), we get a palindrome (7664667).

The spelling of 7252140 in words is "seven million, two hundred fifty-two thousand, one hundred forty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 31 35 42 60 62 70 84 93 105 124 140 155 186 210 217 310 372 420 434 465 557 620 651 868 930 1085 1114 1302 1671 1860 2170 2228 2604 2785 3255 3342 3899 4340 5570 6510 6684 7798 8355 11140 11697 13020 15596 16710 17267 19495 23394 33420 34534 38990 46788 51801 58485 69068 77980 86335 103602 116970 120869 172670 207204 233940 241738 259005 345340 362607 483476 518010 604345 725214 1036020 1208690 1450428 1813035 2417380 3626070 7252140