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234287240 = 23511617863
BaseRepresentation
bin11011111011011…
…11000010001000
3121022212000200012
431331233002020
5434434142430
635125331052
75543260115
oct1575570210
9538760605
10234287240
11110281520
1266566a88
1339700805
142318990c
151587d695
hexdf6f088

234287240 has 64 divisors (see below), whose sum is σ = 576668160. Its totient is φ = 84958720.

The previous prime is 234287239. The next prime is 234287257. The reversal of 234287240 is 42782432.

It is a junction number, because it is equal to n+sod(n) for n = 234287197 and 234287206.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271049 + ... + 271911.

It is an arithmetic number, because the mean of its divisors is an integer number (9010440).

Almost surely, 2234287240 is an apocalyptic number.

234287240 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 234287240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288334080).

234287240 is an abundant number, since it is smaller than the sum of its proper divisors (342380920).

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

234287240 is a wasteful number, since it uses less digits than its factorization.

234287240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502 (or 1498 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 234287240 is about 15306.4443944373. Note that the first 3 decimals coincide. The cubic root of 234287240 is about 616.4760543901.

The spelling of 234287240 in words is "two hundred thirty-four million, two hundred eighty-seven thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 220 440 617 863 1234 1726 2468 3085 3452 4315 4936 6170 6787 6904 8630 9493 12340 13574 17260 18986 24680 27148 33935 34520 37972 47465 54296 67870 75944 94930 135740 189860 271480 379720 532471 1064942 2129884 2662355 4259768 5324710 5857181 10649420 11714362 21298840 23428724 29285905 46857448 58571810 117143620 234287240