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2107885 = 51332429
BaseRepresentation
bin1000000010100111101101
310222002110211
420002213231
51014423020
6113102421
723626303
oct10024755
93862424
102107885
11120a75a
12857a11
1358a590
143cc273
152b985a
hex2029ed

2107885 has 8 divisors (see below), whose sum is σ = 2724120. Its totient is φ = 1556544.

The previous prime is 2107883. The next prime is 2107909. The reversal of 2107885 is 5887012.

It can be written as a sum of positive squares in 4 ways, for example, as 116964 + 1990921 = 342^2 + 1411^2 .

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 2107885 - 21 = 2107883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2107883) 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, 16150 + ... + 16279.

It is an arithmetic number, because the mean of its divisors is an integer number (340515).

22107885 is an apocalyptic number.

It is an amenable number.

2107885 is a deficient number, since it is larger than the sum of its proper divisors (616235).

2107885 is a wasteful number, since it uses less digits than its factorization.

2107885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32447.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 2107885 is about 1451.8557090841. The cubic root of 2107885 is about 128.2179919793.

It can be divided in two parts, 2107 and 885, that added together give a palindrome (2992).

The spelling of 2107885 in words is "two million, one hundred seven thousand, eight hundred eighty-five".

Divisors: 1 5 13 65 32429 162145 421577 2107885