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87094087 = 544116007
BaseRepresentation
bin1010011000011…
…11001101000111
320001212211121221
411030033031013
5134244002322
612350421211
72105200423
oct514171507
9201784557
1087094087
1145187093
1225201807
1315075382
14b7d1b83
1579a59c7
hex530f347

87094087 has 4 divisors (see below), whose sum is σ = 87115536. Its totient is φ = 87072640.

The previous prime is 87094079. The next prime is 87094093. The reversal of 87094087 is 78049078.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78049078 = 239024539.

It is a cyclic number.

It is not a de Polignac number, because 87094087 - 23 = 87094079 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 (87094027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2563 + ... + 13444.

It is an arithmetic number, because the mean of its divisors is an integer number (21778884).

Almost surely, 287094087 is an apocalyptic number.

87094087 is a deficient number, since it is larger than the sum of its proper divisors (21449).

87094087 is a wasteful number, since it uses less digits than its factorization.

87094087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21448.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 87094087 is about 9332.4212828183. The cubic root of 87094087 is about 443.2644379470.

The spelling of 87094087 in words is "eighty-seven million, ninety-four thousand, eighty-seven".

Divisors: 1 5441 16007 87094087