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275000047 = 7131299891
BaseRepresentation
bin10000011001000…
…010101011101111
3201011110110010221
4100121002223233
51030400000142
643142112211
76546314260
oct2031025357
9634413127
10275000047
11131259673
127811b667
1344c8692a
1428746967
1519221767
hex10642aef

275000047 has 8 divisors (see below), whose sum is σ = 316685952. Its totient is φ = 233914200.

The previous prime is 274999993. The next prime is 275000051. The reversal of 275000047 is 740000572.

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 275000047 - 27 = 274999919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 274999985 and 275000030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275000057) 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, 149029 + ... + 150862.

It is an arithmetic number, because the mean of its divisors is an integer number (39585744).

Almost surely, 2275000047 is an apocalyptic number.

275000047 is a deficient number, since it is larger than the sum of its proper divisors (41685905).

275000047 is a wasteful number, since it uses less digits than its factorization.

275000047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300029.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 275000047 is about 16583.1253688803. The cubic root of 275000047 is about 650.2957604728.

The spelling of 275000047 in words is "two hundred seventy-five million, forty-seven", and thus it is an aban number.

Divisors: 1 7 131 917 299891 2099237 39285721 275000047