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87754442 = 2172581013
BaseRepresentation
bin1010011101100…
…00011011001010
320010010101110112
411032300123022
5134431120232
612412514322
72113620566
oct516603312
9203111415
1087754442
1145598236
122547b9a2
1315246b09
14b9246a6
157a864b2
hex53b06ca

87754442 has 8 divisors (see below), whose sum is σ = 139374756. Its totient is φ = 41296192.

The previous prime is 87754441. The next prime is 87754481. The reversal of 87754442 is 24445778.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 87030241 + 724201 = 9329^2 + 851^2 .

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

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 87754442.

It is not an unprimeable number, because it can be changed into a prime (87754441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1290473 + ... + 1290540.

Almost surely, 287754442 is an apocalyptic number.

87754442 is a deficient number, since it is larger than the sum of its proper divisors (51620314).

87754442 is a wasteful number, since it uses less digits than its factorization.

87754442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581032.

The product of its digits is 250880, while the sum is 41.

The square root of 87754442 is about 9367.7340910169. The cubic root of 87754442 is about 444.3819083725.

The spelling of 87754442 in words is "eighty-seven million, seven hundred fifty-four thousand, four hundred forty-two".

Divisors: 1 2 17 34 2581013 5162026 43877221 87754442