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87568413 = 3187115601
BaseRepresentation
bin1010011100000…
…11000000011101
320002202221021120
411032003000131
5134404142123
612404521153
72112214332
oct516030035
9202687246
1087568413
1145480499
12253b01b9
13151b023a
14b8b6989
157a4b2e3
hex538301d

87568413 has 8 divisors (see below), whose sum is σ = 116827776. Its totient is φ = 58344000.

The previous prime is 87568387. The next prime is 87568417. The reversal of 87568413 is 31486578.

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

It is a de Polignac number, because none of the positive numbers 2k-87568413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87568417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2188 + ... + 13413.

It is an arithmetic number, because the mean of its divisors is an integer number (14603472).

Almost surely, 287568413 is an apocalyptic number.

It is an amenable number.

87568413 is a deficient number, since it is larger than the sum of its proper divisors (29259363).

87568413 is a wasteful number, since it uses less digits than its factorization.

87568413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17475.

The product of its digits is 161280, while the sum is 42.

The square root of 87568413 is about 9357.7995810981. The cubic root of 87568413 is about 444.0676739230.

The spelling of 87568413 in words is "eighty-seven million, five hundred sixty-eight thousand, four hundred thirteen".

Divisors: 1 3 1871 5613 15601 46803 29189471 87568413