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4102645 = 54211949
BaseRepresentation
bin1111101001100111110101
321201102202211
433221213311
52022241040
6223533421
746605031
oct17514765
97642684
104102645
112352418
12145a271
13b08501
1478b1c1
155608ea
hex3e99f5

4102645 has 8 divisors (see below), whose sum is σ = 4937400. Its totient is φ = 3272640.

The previous prime is 4102603. The next prime is 4102649. The reversal of 4102645 is 5462014.

It can be written as a sum of positive squares in 4 ways, for example, as 66564 + 4036081 = 258^2 + 2009^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4102645 - 27 = 4102517 is a prime.

4102645 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4102649) 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, 1131 + ... + 3079.

It is an arithmetic number, because the mean of its divisors is an integer number (617175).

Almost surely, 24102645 is an apocalyptic number.

It is an amenable number.

4102645 is a deficient number, since it is larger than the sum of its proper divisors (834755).

4102645 is a wasteful number, since it uses less digits than its factorization.

4102645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 4102645 is about 2025.4987040233. The cubic root of 4102645 is about 160.0864766902.

Adding to 4102645 its reverse (5462014), we get a palindrome (9564659).

The spelling of 4102645 in words is "four million, one hundred two thousand, six hundred forty-five".

Divisors: 1 5 421 1949 2105 9745 820529 4102645