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268388250 = 23531327527
BaseRepresentation
bin11111111111101…
…00011110011010
3200201000112110120
433333310132122
51022201411000
642344254110
76436156014
oct1777643632
9621015416
10268388250
11128553079
1275a71336
13437b0320
14279051b4
15188676a0
hexfff479a

268388250 has 64 divisors (see below), whose sum is σ = 721453824. Its totient is φ = 66062400.

The previous prime is 268388149. The next prime is 268388251. The reversal of 268388250 is 52883862.

It is not an unprimeable number, because it can be changed into a prime (268388251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4014 + ... + 23513.

It is an arithmetic number, because the mean of its divisors is an integer number (11272716).

Almost surely, 2268388250 is an apocalyptic number.

268388250 is an abundant number, since it is smaller than the sum of its proper divisors (453065574).

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

268388250 is a wasteful number, since it uses less digits than its factorization.

268388250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27560 (or 27550 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 268388250 is about 16382.5593238663. The cubic root of 268388250 is about 645.0417616131.

The spelling of 268388250 in words is "two hundred sixty-eight million, three hundred eighty-eight thousand, two hundred fifty".

Divisors: 1 2 3 5 6 10 13 15 25 26 30 39 50 65 75 78 125 130 150 195 250 325 375 390 650 750 975 1625 1950 3250 4875 9750 27527 55054 82581 137635 165162 275270 357851 412905 688175 715702 825810 1073553 1376350 1789255 2064525 2147106 3440875 3578510 4129050 5367765 6881750 8946275 10322625 10735530 17892550 20645250 26838825 44731375 53677650 89462750 134194125 268388250