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109086481 = 724164663
BaseRepresentation
bin1101000000010…
…00011100010001
321121021011112001
412200020130101
5210411231411
614454034001
72463135250
oct640103421
9247234461
10109086481
1156638319
1230648901
13197a561a
14106b8797
15989bdc1
hex6808711

109086481 has 8 divisors (see below), whose sum is σ = 125189504. Its totient is φ = 93113280.

The previous prime is 109086479. The next prime is 109086511. The reversal of 109086481 is 184680901.

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 109086481 - 21 = 109086479 is a prime.

It is a super-2 number, since 2×1090864812 = 23799720673926722, which contains 22 as substring.

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 109086481.

It is not an unprimeable number, because it can be changed into a prime (109086421) 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, 30645 + ... + 34018.

It is an arithmetic number, because the mean of its divisors is an integer number (15648688).

Almost surely, 2109086481 is an apocalyptic number.

It is an amenable number.

109086481 is a deficient number, since it is larger than the sum of its proper divisors (16103023).

109086481 is an equidigital number, since it uses as much as digits as its factorization.

109086481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64911.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 109086481 is about 10444.4473764771. The cubic root of 109086481 is about 477.8119172148.

It can be divided in two parts, 1090 and 86481, that added together give a triangular number (87571 = T418).

The spelling of 109086481 in words is "one hundred nine million, eighty-six thousand, four hundred eighty-one".

Divisors: 1 7 241 1687 64663 452641 15583783 109086481