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268122340 = 22513406117
BaseRepresentation
bin11111111101100…
…11100011100100
3200200112000201001
433332303203210
51022114403330
642334443044
76434000533
oct1776634344
9620460631
10268122340
11128391312
1275963484
1343719295
142787631a
15188139ca
hexffb38e4

268122340 has 12 divisors (see below), whose sum is σ = 563056956. Its totient is φ = 107248928.

The previous prime is 268122331. The next prime is 268122347. The reversal of 268122340 is 43221862.

It can be written as a sum of positive squares in 2 ways, for example, as 81144064 + 186978276 = 9008^2 + 13674^2 .

It is a junction number, because it is equal to n+sod(n) for n = 268122299 and 268122308.

It is not an unprimeable number, because it can be changed into a prime (268122347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6703039 + ... + 6703078.

It is an arithmetic number, because the mean of its divisors is an integer number (46921413).

Almost surely, 2268122340 is an apocalyptic number.

268122340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268122340 is an abundant number, since it is smaller than the sum of its proper divisors (294934616).

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

268122340 is a wasteful number, since it uses less digits than its factorization.

268122340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13406126 (or 13406124 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 268122340 is about 16374.4416698708. The cubic root of 268122340 is about 644.8286627008.

The spelling of 268122340 in words is "two hundred sixty-eight million, one hundred twenty-two thousand, three hundred forty".

Divisors: 1 2 4 5 10 20 13406117 26812234 53624468 67030585 134061170 268122340