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268353620 = 22513417681
BaseRepresentation
bin11111111111011…
…00000001010100
3200200221202221222
433333230001110
51022144303440
642343425512
76435653033
oct1777540124
9620852858
10268353620
1112852a057
1275a55298
134379a632
14278d671a
151885c2b5
hexffec054

268353620 has 12 divisors (see below), whose sum is σ = 563542644. Its totient is φ = 107341440.

The previous prime is 268353607. The next prime is 268353629. The reversal of 268353620 is 26353862.

It can be written as a sum of positive squares in 2 ways, for example, as 176730436 + 91623184 = 13294^2 + 9572^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268353629) 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, 6708821 + ... + 6708860.

It is an arithmetic number, because the mean of its divisors is an integer number (46961887).

Almost surely, 2268353620 is an apocalyptic number.

268353620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268353620 is an abundant number, since it is smaller than the sum of its proper divisors (295189024).

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

268353620 is a wasteful number, since it uses less digits than its factorization.

268353620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13417690 (or 13417688 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 268353620 is about 16381.5023731036. The cubic root of 268353620 is about 645.0140172825.

The spelling of 268353620 in words is "two hundred sixty-eight million, three hundred fifty-three thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 13417681 26835362 53670724 67088405 134176810 268353620