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108434681 = 145174731
BaseRepresentation
bin1100111011010…
…01010011111001
321120001001102022
412131221103321
5210224402211
614432044225
72454452045
oct635512371
9246031368
10108434681
1156232643
1230393675
1319607a44
1410589025
1597bdbdb
hex67694f9

108434681 has 4 divisors (see below), whose sum is σ = 108510864. Its totient is φ = 108358500.

The previous prime is 108434671. The next prime is 108434701. The reversal of 108434681 is 186434801.

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.

It is a cyclic number.

It is not a de Polignac number, because 108434681 - 222 = 104240377 is a prime.

It is a super-2 number, since 2×1084346812 = 23516160087143522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108434671) 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, 35915 + ... + 38816.

It is an arithmetic number, because the mean of its divisors is an integer number (27127716).

Almost surely, 2108434681 is an apocalyptic number.

It is an amenable number.

108434681 is a deficient number, since it is larger than the sum of its proper divisors (76183).

108434681 is an equidigital number, since it uses as much as digits as its factorization.

108434681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76182.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 108434681 is about 10413.1974436289. The cubic root of 108434681 is about 476.8583613442.

The spelling of 108434681 in words is "one hundred eight million, four hundred thirty-four thousand, six hundred eighty-one".

Divisors: 1 1451 74731 108434681