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87289741 = 7111133633
BaseRepresentation
bin1010011001111…
…10111110001101
320002020210000101
411030332332031
5134321232431
612354531101
72106644020
oct514767615
9202223011
1087289741
1145300090
1225296a91
1315113446
14b8431b7
1579e3961
hex533ef8d

87289741 has 8 divisors (see below), whose sum is σ = 108828864. Its totient is φ = 68017920.

The previous prime is 87289729. The next prime is 87289757. The reversal of 87289741 is 14798278.

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

It is a cyclic number.

It is not a de Polignac number, because 87289741 - 211 = 87287693 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87289691 and 87289700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87284741) 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 7 ways as a sum of consecutive naturals, for example, 566740 + ... + 566893.

It is an arithmetic number, because the mean of its divisors is an integer number (13603608).

Almost surely, 287289741 is an apocalyptic number.

It is an amenable number.

87289741 is a deficient number, since it is larger than the sum of its proper divisors (21539123).

87289741 is a wasteful number, since it uses less digits than its factorization.

87289741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133651.

The product of its digits is 225792, while the sum is 46.

The square root of 87289741 is about 9342.8978909116. The cubic root of 87289741 is about 443.5961160265.

The spelling of 87289741 in words is "eighty-seven million, two hundred eighty-nine thousand, seven hundred forty-one".

Divisors: 1 7 11 77 1133633 7935431 12469963 87289741