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87390309214 = 2133361165739
BaseRepresentation
bin101000101100011011…
…1100100101101011110
322100120101021200101001
41101120313210231132
52412433404343324
6104051353340514
76212420241415
oct1213067445536
9270511250331
1087390309214
113407560784a
1214b2aa0773a
138319268450
14433049647c
1524171d4e44
hex1458de4b5e

87390309214 has 8 divisors (see below), whose sum is σ = 141168961080. Its totient is φ = 40333988856.

The previous prime is 87390309211. The next prime is 87390309241. The reversal of 87390309214 is 41290309378.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×873903092142 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87390309211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1680582844 + ... + 1680582895.

It is an arithmetic number, because the mean of its divisors is an integer number (17646120135).

Almost surely, 287390309214 is an apocalyptic number.

87390309214 is a deficient number, since it is larger than the sum of its proper divisors (53778651866).

87390309214 is a wasteful number, since it uses less digits than its factorization.

87390309214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361165754.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 87390309214 in words is "eighty-seven billion, three hundred ninety million, three hundred nine thousand, two hundred fourteen".

Divisors: 1 2 13 26 3361165739 6722331478 43695154607 87390309214