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87080247 = 3271913457
BaseRepresentation
bin1010011000010…
…11110100110111
320001212010122100
411030023310313
5134243031442
612350233143
72105112162
oct514136467
9201763570
1087080247
1145177751
12251b57b3
131506bc97
14b7caad9
1579a184c
hex530bd37

87080247 has 12 divisors (see below), whose sum is σ = 125966880. Its totient is φ = 57968448.

The previous prime is 87080233. The next prime is 87080261. The reversal of 87080247 is 74208078.

It is an interprime number because it is at equal distance from previous prime (87080233) and next prime (87080261).

It is not a de Polignac number, because 87080247 - 212 = 87076151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87080267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258 + ... + 13199.

It is an arithmetic number, because the mean of its divisors is an integer number (10497240).

Almost surely, 287080247 is an apocalyptic number.

87080247 is a deficient number, since it is larger than the sum of its proper divisors (38886633).

87080247 is a wasteful number, since it uses less digits than its factorization.

87080247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14182 (or 14179 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 87080247 is about 9331.6797523276. The cubic root of 87080247 is about 443.2409571918.

The spelling of 87080247 in words is "eighty-seven million, eighty thousand, two hundred forty-seven".

Divisors: 1 3 9 719 2157 6471 13457 40371 121113 9675583 29026749 87080247