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102486247 = 199915443
BaseRepresentation
bin1100001101111…
…01000011100111
321010211211200221
412012331003213
5202214024442
614100345211
72353055503
oct606750347
9233754627
10102486247
115293a486
122a3a5207
1318304366
14d87b303
158ee6467
hex61bd0e7

102486247 has 8 divisors (see below), whose sum is σ = 108008960. Its totient is φ = 96976440.

The previous prime is 102486239. The next prime is 102486253. The reversal of 102486247 is 742684201.

It is a happy number.

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 102486247 - 23 = 102486239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102486227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16108 + ... + 21550.

It is an arithmetic number, because the mean of its divisors is an integer number (13501120).

Almost surely, 2102486247 is an apocalyptic number.

102486247 is a deficient number, since it is larger than the sum of its proper divisors (5522713).

102486247 is an equidigital number, since it uses as much as digits as its factorization.

102486247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6453.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 102486247 is about 10123.5491306162. The cubic root of 102486247 is about 467.9741490457.

The spelling of 102486247 in words is "one hundred two million, four hundred eighty-six thousand, two hundred forty-seven".

Divisors: 1 19 991 5443 18829 103417 5394013 102486247