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1081067087 = 7115799643
BaseRepresentation
bin100000001101111…
…1100011001001111
32210100012220020202
41000123330121033
54203223121322
6255135004115
735534630042
oct10033743117
92710186222
101081067087
11505263781
1226206963b
13142c82189
14a3810c59
1564d96292
hex406fc64f

1081067087 has 8 divisors (see below), whose sum is σ = 1097101440. Its totient is φ = 1065055320.

The previous prime is 1081067083. The next prime is 1081067189. The reversal of 1081067087 is 7807601801.

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 1081067087 - 22 = 1081067083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1081067087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081067083) 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, 107288 + ... + 116930.

It is an arithmetic number, because the mean of its divisors is an integer number (137137680).

Almost surely, 21081067087 is an apocalyptic number.

1081067087 is a deficient number, since it is larger than the sum of its proper divisors (16034353).

1081067087 is an equidigital number, since it uses as much as digits as its factorization.

1081067087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11293.

The product of its (nonzero) digits is 18816, while the sum is 38.

The square root of 1081067087 is about 32879.5846537027. The cubic root of 1081067087 is about 1026.3233629086.

Adding to 1081067087 its reverse (7807601801), we get a palindrome (8888668888).

The spelling of 1081067087 in words is "one billion, eighty-one million, sixty-seven thousand, eighty-seven".

Divisors: 1 71 1579 9643 112109 684653 15226297 1081067087