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87481270 = 2553165059
BaseRepresentation
bin1010011011011…
…01101110110110
320002121111202001
411031231232312
5134343400040
612403005514
72111402302
oct515555666
9202544661
1087481270
1145420a78
122536989a
131517c686
14b892d02
157a3059a
hex536dbb6

87481270 has 16 divisors (see below), whose sum is σ = 160438320. Its totient is φ = 34332064.

The previous prime is 87481267. The next prime is 87481319. The reversal of 87481270 is 7218478.

It is a congruent number.

It is an unprimeable number.

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, 82000 + ... + 83059.

It is an arithmetic number, because the mean of its divisors is an integer number (10027395).

Almost surely, 287481270 is an apocalyptic number.

87481270 is a deficient number, since it is larger than the sum of its proper divisors (72957050).

87481270 is a wasteful number, since it uses less digits than its factorization.

87481270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165119.

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 87481270 is about 9353.1422527405. The cubic root of 87481270 is about 443.9203215785.

The spelling of 87481270 in words is "eighty-seven million, four hundred eighty-one thousand, two hundred seventy".

Divisors: 1 2 5 10 53 106 265 530 165059 330118 825295 1650590 8748127 17496254 43740635 87481270