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243641468 = 22767712853
BaseRepresentation
bin11101000010110…
…10110001111100
3121222110021021002
432201122301330
5444333011333
640102025432
76015626660
oct1641326174
9558407232
10243641468
11115590494
1269718278
133b627465
14245028a0
15165ca0e8
hexe85ac7c

243641468 has 24 divisors (see below), whose sum is σ = 488040672. Its totient is φ = 104255424.

The previous prime is 243641459. The next prime is 243641473. The reversal of 243641468 is 864146342.

It is a super-2 number, since 2×2436414682 = 118722329858390048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12530 + ... + 25382.

It is an arithmetic number, because the mean of its divisors is an integer number (20335028).

Almost surely, 2243641468 is an apocalyptic number.

243641468 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

243641468 is an abundant number, since it is smaller than the sum of its proper divisors (244399204).

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

243641468 is a wasteful number, since it uses less digits than its factorization.

243641468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13541 (or 13539 counting only the distinct ones).

The product of its digits is 110592, while the sum is 38.

The square root of 243641468 is about 15609.0188032432. The cubic root of 243641468 is about 624.5737620734.

The spelling of 243641468 in words is "two hundred forty-three million, six hundred forty-one thousand, four hundred sixty-eight".

Divisors: 1 2 4 7 14 28 677 1354 2708 4739 9478 12853 18956 25706 51412 89971 179942 359884 8701481 17402962 34805924 60910367 121820734 243641468