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3800005 = 5113571
BaseRepresentation
bin1110011111101111000101
321011001121221
432133233011
51433100010
6213240341
744204506
oct16375705
97131557
103800005
112166000
1213330b1
13a30831
1470cbad
15500dda
hex39fbc5

3800005 has 16 divisors (see below), whose sum is σ = 5024448. Its totient is φ = 2758800.

The previous prime is 3799973. The next prime is 3800021. The reversal of 3800005 is 5000083.

It is not a de Polignac number, because 3800005 - 25 = 3799973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6370 + ... + 6940.

It is an arithmetic number, because the mean of its divisors is an integer number (314028).

Almost surely, 23800005 is an apocalyptic number.

It is an amenable number.

3800005 is a deficient number, since it is larger than the sum of its proper divisors (1224443).

3800005 is an equidigital number, since it uses as much as digits as its factorization.

3800005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 3800005 is about 1949.3601514343. The cubic root of 3800005 is about 156.0491435133.

Adding to 3800005 its reverse (5000083), we get a palindrome (8800088).

It can be divided in two parts, 3 and 800005, that added together give a palindrome (800008).

The spelling of 3800005 in words is "three million, eight hundred thousand, five".

Divisors: 1 5 11 55 121 571 605 1331 2855 6281 6655 31405 69091 345455 760001 3800005