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87201069 = 3792631399
BaseRepresentation
bin1010011001010…
…01010100101101
320002002021101020
411030221110231
5134310413234
612353004353
72106124344
oct514512455
9202067336
1087201069
114524a4aa
12252536b9
13150b1c87
14b81cb5b
1579c7549
hex532952d

87201069 has 16 divisors (see below), whose sum is σ = 118272000. Its totient is φ = 57139056.

The previous prime is 87201061. The next prime is 87201091. The reversal of 87201069 is 96010278.

It is not a de Polignac number, because 87201069 - 23 = 87201061 is a prime.

It is a super-2 number, since 2×872010692 = 15208052869485522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87201061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61632 + ... + 63030.

It is an arithmetic number, because the mean of its divisors is an integer number (7392000).

Almost surely, 287201069 is an apocalyptic number.

It is an amenable number.

87201069 is a deficient number, since it is larger than the sum of its proper divisors (31070931).

87201069 is a wasteful number, since it uses less digits than its factorization.

87201069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 87201069 is about 9338.1512624288. The cubic root of 87201069 is about 443.4458582719.

The spelling of 87201069 in words is "eighty-seven million, two hundred one thousand, sixty-nine".

Divisors: 1 3 79 237 263 789 1399 4197 20777 62331 110521 331563 367937 1103811 29067023 87201069