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252340620 = 223573119381
BaseRepresentation
bin11110000101001…
…10100110001100
3122120211020020220
433002212212030
51004044344440
641012311340
76152600640
oct1702464614
9576736226
10252340620
1111a492274
1270612550
1340381b9c
1425728c20
15172478d0
hexf0a698c

252340620 has 96 divisors (see below), whose sum is σ = 833581056. Its totient is φ = 55814400.

The previous prime is 252340601. The next prime is 252340637. The reversal of 252340620 is 26043252.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3330 + ... + 22710.

It is an arithmetic number, because the mean of its divisors is an integer number (8683136).

Almost surely, 2252340620 is an apocalyptic number.

252340620 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 252340620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (416790528).

252340620 is an abundant number, since it is smaller than the sum of its proper divisors (581240436).

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

252340620 is a wasteful number, since it uses less digits than its factorization.

252340620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19431 (or 19429 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 252340620 is about 15885.2327650557. The cubic root of 252340620 is about 631.9204187303.

Adding to 252340620 its reverse (26043252), we get a palindrome (278383872).

The spelling of 252340620 in words is "two hundred fifty-two million, three hundred forty thousand, six hundred twenty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 31 35 42 60 62 70 84 93 105 124 140 155 186 210 217 310 372 420 434 465 620 651 868 930 1085 1302 1860 2170 2604 3255 4340 6510 13020 19381 38762 58143 77524 96905 116286 135667 193810 232572 271334 290715 387620 407001 542668 581430 600811 678335 814002 1162860 1201622 1356670 1628004 1802433 2035005 2403244 2713340 3004055 3604866 4070010 4205677 6008110 7209732 8140020 8411354 9012165 12016220 12617031 16822708 18024330 21028385 25234062 36048660 42056770 50468124 63085155 84113540 126170310 252340620