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87163077 = 3231319643
BaseRepresentation
bin1010011001000…
…00000011000101
320002000100021010
411030200003011
5134303204302
612352112433
72105605521
oct514400305
9202010233
1087163077
1145223a01
1225235719
131509a8b1
14b80cd81
1579bb16c
hex53200c5

87163077 has 16 divisors (see below), whose sum is σ = 122208768. Its totient is φ = 55152240.

The previous prime is 87163057. The next prime is 87163081. The reversal of 87163077 is 77036178.

It is not a de Polignac number, because 87163077 - 28 = 87162821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87163057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4218 + ... + 13860.

It is an arithmetic number, because the mean of its divisors is an integer number (7638048).

Almost surely, 287163077 is an apocalyptic number.

It is an amenable number.

87163077 is a deficient number, since it is larger than the sum of its proper divisors (35045691).

87163077 is a wasteful number, since it uses less digits than its factorization.

87163077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9800.

The product of its (nonzero) digits is 49392, while the sum is 39.

The square root of 87163077 is about 9336.1168051819. The cubic root of 87163077 is about 443.3814483492.

The spelling of 87163077 in words is "eighty-seven million, one hundred sixty-three thousand, seventy-seven".

Divisors: 1 3 23 69 131 393 3013 9039 9643 28929 221789 665367 1263233 3789699 29054359 87163077