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275220143 = 11215311621
BaseRepresentation
bin10000011001111…
…000011010101111
3201011212122001122
4100121320122233
51030424021033
643150531155
76551222042
oct2031703257
9634778048
10275220143
11131399a70
1278206abb
1345032b73
14287a2c59
1519266a98
hex106786af

275220143 has 8 divisors (see below), whose sum is σ = 300405456. Its totient is φ = 250062400.

The previous prime is 275220107. The next prime is 275220151. The reversal of 275220143 is 341022572.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 275220143 - 26 = 275220079 is a prime.

It is a super-2 number, since 2×2752201432 = 151492254225880898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275220103) 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, 17873 + ... + 29493.

It is an arithmetic number, because the mean of its divisors is an integer number (37550682).

Almost surely, 2275220143 is an apocalyptic number.

275220143 is a deficient number, since it is larger than the sum of its proper divisors (25185313).

275220143 is a wasteful number, since it uses less digits than its factorization.

275220143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13785.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 275220143 is about 16589.7601851262. The cubic root of 275220143 is about 650.4692020537.

The spelling of 275220143 in words is "two hundred seventy-five million, two hundred twenty thousand, one hundred forty-three".

Divisors: 1 11 2153 11621 23683 127831 25020013 275220143