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87894271 = 1672811873
BaseRepresentation
bin1010011110100…
…10100011111111
320010101111021101
411033102203333
5140000104041
612415513531
72115042343
oct517224377
9203344241
1087894271
11456832a3
12255288a7
131529565a
14b95d623
157ab2b31
hex53d28ff

87894271 has 8 divisors (see below), whose sum is σ = 88782624. Its totient is φ = 87010560.

The previous prime is 87894241. The next prime is 87894281. The reversal of 87894271 is 17249878.

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 87894271 - 213 = 87886079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87894241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45991 + ... + 47863.

It is an arithmetic number, because the mean of its divisors is an integer number (11097828).

Almost surely, 287894271 is an apocalyptic number.

87894271 is a deficient number, since it is larger than the sum of its proper divisors (888353).

87894271 is a wasteful number, since it uses less digits than its factorization.

87894271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2321.

The product of its digits is 225792, while the sum is 46.

The square root of 87894271 is about 9375.1944513167. The cubic root of 87894271 is about 444.6178109741.

The spelling of 87894271 in words is "eighty-seven million, eight hundred ninety-four thousand, two hundred seventy-one".

Divisors: 1 167 281 1873 46927 312791 526313 87894271