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10189109 = 72207941
BaseRepresentation
bin100110110111…
…100100110101
3201011122211102
4212313210311
510102022414
61002215445
7152414600
oct46674465
921148742
1010189109
11582a257
1234b4585
132159978
1414d3337
15d63ede
hex9b7935

10189109 has 6 divisors (see below), whose sum is σ = 11852694. Its totient is φ = 8733480.

The previous prime is 10189099. The next prime is 10189129. The reversal of 10189109 is 90198101.

It can be written as a sum of positive squares in only one way, i.e., 9746884 + 442225 = 3122^2 + 665^2 .

It is not a de Polignac number, because 10189109 - 220 = 9140533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10189129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103922 + ... + 104019.

It is an arithmetic number, because the mean of its divisors is an integer number (1975449).

Almost surely, 210189109 is an apocalyptic number.

It is an amenable number.

10189109 is a deficient number, since it is larger than the sum of its proper divisors (1663585).

10189109 is an equidigital number, since it uses as much as digits as its factorization.

10189109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207955 (or 207948 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 10189109 is about 3192.0383769623. The cubic root of 10189109 is about 216.7930736407.

It can be divided in two parts, 101 and 89109, that multiplied together give a palindrome (9000009).

The spelling of 10189109 in words is "ten million, one hundred eighty-nine thousand, one hundred nine".

Divisors: 1 7 49 207941 1455587 10189109