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109896761 = 138453597
BaseRepresentation
bin1101000110011…
…10010000111001
321122210100000102
412203032100321
5211113144021
614523245145
72503051502
oct643162071
9248710012
10109896761
1157041077
12309797b5
13199ca390
1410849ba9
1599ac00b
hex68ce439

109896761 has 4 divisors (see below), whose sum is σ = 118350372. Its totient is φ = 101443152.

The previous prime is 109896757. The next prime is 109896781. The reversal of 109896761 is 167698901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 167698901 = 643260807.

It can be written as a sum of positive squares in 2 ways, for example, as 6996025 + 102900736 = 2645^2 + 10144^2 .

It is a cyclic number.

It is not a de Polignac number, because 109896761 - 22 = 109896757 is a prime.

It is a super-2 number, since 2×1098967612 = 24154596156582242, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109896751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4226786 + ... + 4226811.

It is an arithmetic number, because the mean of its divisors is an integer number (29587593).

Almost surely, 2109896761 is an apocalyptic number.

It is an amenable number.

109896761 is a deficient number, since it is larger than the sum of its proper divisors (8453611).

109896761 is an equidigital number, since it uses as much as digits as its factorization.

109896761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8453610.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 109896761 is about 10483.1656001420. The cubic root of 109896761 is about 478.9920413948.

The spelling of 109896761 in words is "one hundred nine million, eight hundred ninety-six thousand, seven hundred sixty-one".

Divisors: 1 13 8453597 109896761