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252747910120 = 23571198744789
BaseRepresentation
bin1110101101100011110…
…0110000101111101000
3220011101102210011011011
43223120330300233220
513120111431110440
6312035532513304
724155220534346
oct3533074605750
9804342704134
10252747910120
119820a673852
1240b9891b834
131aaac47b704
14c339756996
1568941b49ea
hex3ad8f30be8

252747910120 has 64 divisors (see below), whose sum is σ = 576995529600. Its totient is φ = 99622844160.

The previous prime is 252747910081. The next prime is 252747910127. The reversal of 252747910120 is 21019747252.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (252747910127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5620686 + ... + 5665474.

It is an arithmetic number, because the mean of its divisors is an integer number (9015555150).

Almost surely, 2252747910120 is an apocalyptic number.

252747910120 is a gapful number since it is divisible by the number (20) 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 252747910120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288497764800).

252747910120 is an abundant number, since it is smaller than the sum of its proper divisors (324247619480).

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

252747910120 is a wasteful number, since it uses less digits than its factorization.

252747910120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46858 (or 46854 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The spelling of 252747910120 in words is "two hundred fifty-two billion, seven hundred forty-seven million, nine hundred ten thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 71 142 284 355 568 710 1420 1987 2840 3974 7948 9935 15896 19870 39740 44789 79480 89578 141077 179156 223945 282154 358312 447890 564308 705385 895780 1128616 1410770 1791560 2821540 3180019 5643080 6360038 12720076 15900095 25440152 31800190 63600380 88995743 127200760 177991486 355982972 444978715 711965944 889957430 1779914860 3559829720 6318697753 12637395506 25274791012 31593488765 50549582024 63186977530 126373955060 252747910120