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252257120 = 2553742611
BaseRepresentation
bin11110000100100…
…10001101100000
3122120122222201022
433002102031200
51004034211440
641010425012
76152102333
oct1702221540
9576588638
10252257120
1111a435565
1270592168
1340352b8b
142570661a
151722ccb5
hexf092360

252257120 has 48 divisors (see below), whose sum is σ = 612078768. Its totient is φ = 98173440.

The previous prime is 252257119. The next prime is 252257147. The reversal of 252257120 is 21752252.

It is a self number, because there is not a number n which added to its sum of digits gives 252257120.

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 7 ways as a sum of consecutive naturals, for example, 15386 + ... + 27225.

It is an arithmetic number, because the mean of its divisors is an integer number (12751641).

Almost surely, 2252257120 is an apocalyptic number.

252257120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252257120 is an abundant number, since it is smaller than the sum of its proper divisors (359821648).

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

252257120 is a wasteful number, since it uses less digits than its factorization.

252257120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42663 (or 42655 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 252257120 is about 15882.6043204507. The cubic root of 252257120 is about 631.8507098106.

The spelling of 252257120 in words is "two hundred fifty-two million, two hundred fifty-seven thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 37 40 74 80 148 160 185 296 370 592 740 1184 1480 2960 5920 42611 85222 170444 213055 340888 426110 681776 852220 1363552 1576607 1704440 3153214 3408880 6306428 6817760 7883035 12612856 15766070 25225712 31532140 50451424 63064280 126128560 252257120