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102068881 = 308333107
BaseRepresentation
bin1100001010101…
…11001010010001
321010001122011221
412011113022101
5202112201011
614043405041
72346366625
oct605271221
9233048157
10102068881
1152684952
122a223781
13181b93b5
14d7ad185
158e62971
hex6157291

102068881 has 4 divisors (see below), whose sum is σ = 102105072. Its totient is φ = 102032692.

The previous prime is 102068873. The next prime is 102068887. The reversal of 102068881 is 188860201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 188860201 = 351153791.

It is a cyclic number.

It is not a de Polignac number, because 102068881 - 23 = 102068873 is a prime.

It is a super-2 number, since 2×1020688812 = 20836112937184322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102068887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13471 + ... + 19636.

It is an arithmetic number, because the mean of its divisors is an integer number (25526268).

Almost surely, 2102068881 is an apocalyptic number.

It is an amenable number.

102068881 is a deficient number, since it is larger than the sum of its proper divisors (36191).

102068881 is an equidigital number, since it uses as much as digits as its factorization.

102068881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36190.

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 102068881 is about 10102.9144804853. The cubic root of 102068881 is about 467.3380238999.

The spelling of 102068881 in words is "one hundred two million, sixty-eight thousand, eight hundred eighty-one".

Divisors: 1 3083 33107 102068881