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87793069 = 71353109167
BaseRepresentation
bin1010011101110…
…01110110101101
320010012100110011
411032321312231
5134433334234
612413413221
72114141320
oct516716655
9203170404
1087793069
1145614261
122549a211
131525b580
14b9347b7
157a92b64
hex53b9dad

87793069 has 32 divisors (see below), whose sum is σ = 111767040. Its totient is φ = 67122432.

The previous prime is 87793067. The next prime is 87793073. The reversal of 87793069 is 96039778.

It is not a de Polignac number, because 87793069 - 21 = 87793067 is a prime.

It is a super-2 number, since 2×877930692 = 15415245928877522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87793067) 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 31 ways as a sum of consecutive naturals, for example, 525624 + ... + 525790.

It is an arithmetic number, because the mean of its divisors is an integer number (3492720).

Almost surely, 287793069 is an apocalyptic number.

It is an amenable number.

87793069 is a deficient number, since it is larger than the sum of its proper divisors (23973971).

87793069 is a wasteful number, since it uses less digits than its factorization.

87793069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 87793069 is about 9369.7955687411. The cubic root of 87793069 is about 444.4471002179.

The spelling of 87793069 in words is "eighty-seven million, seven hundred ninety-three thousand, sixty-nine".

Divisors: 1 7 13 53 91 109 167 371 689 763 1169 1417 2171 4823 5777 8851 9919 15197 18203 40439 61957 75101 115063 127421 236639 525707 805441 964759 1656473 6753313 12541867 87793069