Search a number
-
+
105097281 = 3172389597
BaseRepresentation
bin1100100001110…
…10100001000001
321022202111100220
412100322201001
5203401103111
614232333253
72414212032
oct620724101
9238674326
10105097281
1154363163
122b244229
1318a09953
14dd5aa89
15935ee06
hex643a841

105097281 has 16 divisors (see below), whose sum is σ = 154825344. Its totient is φ = 63075584.

The previous prime is 105097261. The next prime is 105097283. The reversal of 105097281 is 182790501.

It is a cyclic number.

It is not a de Polignac number, because 105097281 - 25 = 105097249 is a prime.

It is a super-2 number, since 2×1050972812 = 22090876947185922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105097283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43626 + ... + 45971.

It is an arithmetic number, because the mean of its divisors is an integer number (9676584).

Almost surely, 2105097281 is an apocalyptic number.

It is an amenable number.

105097281 is a deficient number, since it is larger than the sum of its proper divisors (49728063).

105097281 is a wasteful number, since it uses less digits than its factorization.

105097281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89640.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 105097281 is about 10251.6964937517. The cubic root of 105097281 is about 471.9150489290.

The spelling of 105097281 in words is "one hundred five million, ninety-seven thousand, two hundred eighty-one".

Divisors: 1 3 17 23 51 69 391 1173 89597 268791 1523149 2060731 4569447 6182193 35032427 105097281