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275042620 = 22543319817
BaseRepresentation
bin10000011001001…
…101000100111100
3201011112121112201
4100121031010330
51030402330440
643143041244
76546552346
oct2031150474
9634477481
10275042620
11131288656
1278140224
1344ca0118
1428758296
151922e19a
hex1064d13c

275042620 has 24 divisors (see below), whose sum is σ = 591023664. Its totient is φ = 107458176.

The previous prime is 275042597. The next prime is 275042623. The reversal of 275042620 is 26240572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275042623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159049 + ... + 160768.

It is an arithmetic number, because the mean of its divisors is an integer number (24625986).

Almost surely, 2275042620 is an apocalyptic number.

275042620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275042620 is an abundant number, since it is smaller than the sum of its proper divisors (315981044).

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

275042620 is a wasteful number, since it uses less digits than its factorization.

275042620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319869 (or 319867 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 275042620 is about 16584.4089433419. The cubic root of 275042620 is about 650.3293163615.

The spelling of 275042620 in words is "two hundred seventy-five million, forty-two thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 43 86 172 215 430 860 319817 639634 1279268 1599085 3198170 6396340 13752131 27504262 55008524 68760655 137521310 275042620