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87768414 = 2332370667
BaseRepresentation
bin1010011101100…
…11110101011110
320010011002122000
411032303311132
5134432042124
612413103130
72114006406
oct516636536
9203132560
1087768414
11455a7788
1225487aa6
1315250296
14b929806
157a8a6c9
hex53b3d5e

87768414 has 32 divisors (see below), whose sum is σ = 203523840. Its totient is φ = 27983736.

The previous prime is 87768379. The next prime is 87768419. The reversal of 87768414 is 41486778.

It is a self number, because there is not a number n which added to its sum of digits gives 87768414.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87768419) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 34092 + ... + 36575.

It is an arithmetic number, because the mean of its divisors is an integer number (6360120).

Almost surely, 287768414 is an apocalyptic number.

87768414 is an abundant number, since it is smaller than the sum of its proper divisors (115755426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87768414 is a wasteful number, since it uses less digits than its factorization.

87768414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70701 (or 70695 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 87768414 is about 9368.4798126484. The cubic root of 87768414 is about 444.4054915074.

The spelling of 87768414 in words is "eighty-seven million, seven hundred sixty-eight thousand, four hundred fourteen".

Divisors: 1 2 3 6 9 18 23 27 46 54 69 138 207 414 621 1242 70667 141334 212001 424002 636003 1272006 1625341 1908009 3250682 3816018 4876023 9752046 14628069 29256138 43884207 87768414