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87388280419 = 1123345408223
BaseRepresentation
bin101000101100010111…
…1110101011001100011
322100120020110121101111
41101120233311121203
52412432344433134
6104051242044151
76212364061516
oct1213057653143
9270506417344
1087388280419
1134074451560
1214b2a1a9657
138318a07b8b
1443300c8d7d
152416e33c64
hex1458bf5663

87388280419 has 8 divisors (see below), whose sum is σ = 99477568512. Its totient is φ = 75989808840.

The previous prime is 87388280383. The next prime is 87388280461. The reversal of 87388280419 is 91408288378.

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

It is not a de Polignac number, because 87388280419 - 215 = 87388247651 is a prime.

It is a super-2 number, since 2×873882804192 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87388283419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172703859 + ... + 172704364.

It is an arithmetic number, because the mean of its divisors is an integer number (12434696064).

Almost surely, 287388280419 is an apocalyptic number.

87388280419 is a deficient number, since it is larger than the sum of its proper divisors (12089288093).

87388280419 is a wasteful number, since it uses less digits than its factorization.

87388280419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345408257.

The product of its (nonzero) digits is 6193152, while the sum is 58.

The spelling of 87388280419 in words is "eighty-seven billion, three hundred eighty-eight million, two hundred eighty thousand, four hundred nineteen".

Divisors: 1 11 23 253 345408223 3799490453 7944389129 87388280419