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87629361 = 381136017
BaseRepresentation
bin1010011100100…
…01111000110001
320002220000212220
411032101320301
5134413114421
612410111253
72112560121
oct516217061
9202800786
1087629361
1145512266
122541b529
1315201bc1
14b8d0c81
157a5e3c6
hex5391e31

87629361 has 8 divisors (see below), whose sum is σ = 116986464. Its totient is φ = 58345920.

The previous prime is 87629359. The next prime is 87629449. The reversal of 87629361 is 16392678.

It is a happy number.

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

It is not a de Polignac number, because 87629361 - 21 = 87629359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87629161) 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 7 ways as a sum of consecutive naturals, for example, 15576 + ... + 20441.

It is an arithmetic number, because the mean of its divisors is an integer number (14623308).

Almost surely, 287629361 is an apocalyptic number.

It is an amenable number.

87629361 is a deficient number, since it is larger than the sum of its proper divisors (29357103).

87629361 is a wasteful number, since it uses less digits than its factorization.

87629361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36831.

The product of its digits is 108864, while the sum is 42.

The square root of 87629361 is about 9361.0555494559. The cubic root of 87629361 is about 444.1706743808.

It can be divided in two parts, 87629 and 361, that added together give a triangular number (87990 = T419).

The spelling of 87629361 in words is "eighty-seven million, six hundred twenty-nine thousand, three hundred sixty-one".

Divisors: 1 3 811 2433 36017 108051 29209787 87629361