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268769240 = 2356719231
BaseRepresentation
bin10000000001010…
…001011111011000
3200201201220002022
4100001101133120
51022301103430
642400354012
76442333535
oct2001213730
9621656068
10268769240
11128793343
1276015908
13438b486c
14279a3d8c
15188e04e5
hex100517d8

268769240 has 16 divisors (see below), whose sum is σ = 604730880. Its totient is φ = 107507680.

The previous prime is 268769239. The next prime is 268769243. The reversal of 268769240 is 42967862.

It is a junction number, because it is equal to n+sod(n) for n = 268769191 and 268769200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268769243) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3359576 + ... + 3359655.

It is an arithmetic number, because the mean of its divisors is an integer number (37795680).

Almost surely, 2268769240 is an apocalyptic number.

268769240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268769240 is an abundant number, since it is smaller than the sum of its proper divisors (335961640).

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

268769240 is a wasteful number, since it uses less digits than its factorization.

268769240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6719242 (or 6719238 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 268769240 is about 16394.1831147514. The cubic root of 268769240 is about 645.3468398789.

The spelling of 268769240 in words is "two hundred sixty-eight million, seven hundred sixty-nine thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 20 40 6719231 13438462 26876924 33596155 53753848 67192310 134384620 268769240