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2103068285 = 5420613657
BaseRepresentation
bin111110101011010…
…0100011001111101
312102120021221022222
41331112210121331
513301341141120
6544404015125
7103054533263
oct17526443175
95376257288
102103068285
1198a14436a
124a83914a5
13276923606
1415d448433
15c4971525
hex7d5a467d

2103068285 has 4 divisors (see below), whose sum is σ = 2523681948. Its totient is φ = 1682454624.

The previous prime is 2103068239. The next prime is 2103068291. The reversal of 2103068285 is 5828603012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 412049401 + 1691018884 = 20299^2 + 41122^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103068285 - 26 = 2103068221 is a prime.

It is a super-2 number, since 2×21030682852 = 8845792422745682450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210306824 + ... + 210306833.

It is an arithmetic number, because the mean of its divisors is an integer number (630920487).

Almost surely, 22103068285 is an apocalyptic number.

It is an amenable number.

2103068285 is a deficient number, since it is larger than the sum of its proper divisors (420613663).

2103068285 is an equidigital number, since it uses as much as digits as its factorization.

2103068285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420613662.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 2103068285 is about 45859.2224639712. Note that the first 3 decimals coincide. The cubic root of 2103068285 is about 1281.2025411412.

The spelling of 2103068285 in words is "two billion, one hundred three million, sixty-eight thousand, two hundred eighty-five".

Divisors: 1 5 420613657 2103068285