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87075727 = 192241207
BaseRepresentation
bin1010011000010…
…10101110001111
320001211220102221
411030022232033
5134242410402
612350200211
72105063044
oct514125617
9201756387
1087075727
1145174312
12251b3067
1315069bcb
14b7c91cb
1579a0337
hex530ab8f

87075727 has 6 divisors (see below), whose sum is σ = 91900248. Its totient is φ = 82492452.

The previous prime is 87075707. The next prime is 87075733. The reversal of 87075727 is 72757078.

It is a de Polignac number, because none of the positive numbers 2k-87075727 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 (87075707) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 120243 + ... + 120964.

It is an arithmetic number, because the mean of its divisors is an integer number (15316708).

Almost surely, 287075727 is an apocalyptic number.

87075727 is a deficient number, since it is larger than the sum of its proper divisors (4824521).

87075727 is a wasteful number, since it uses less digits than its factorization.

87075727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241245 (or 241226 counting only the distinct ones).

The product of its (nonzero) digits is 192080, while the sum is 43.

The square root of 87075727 is about 9331.4375634197. The cubic root of 87075727 is about 443.2332880825.

The spelling of 87075727 in words is "eighty-seven million, seventy-five thousand, seven hundred twenty-seven".

Divisors: 1 19 361 241207 4582933 87075727