Search a number
-
+
381880006 = 21619117937
BaseRepresentation
bin10110110000110…
…000011011000110
3222121120111212221
4112300300123012
51240230130011
6101521002554
712314632534
oct2660603306
9877514787
10381880006
1118661a112
12a7a8345a
1361168b01
1438a09154
15237d4971
hex16c306c6

381880006 has 8 divisors (see below), whose sum is σ = 573178680. Its totient is φ = 190820448.

The previous prime is 381880001. The next prime is 381880007. The reversal of 381880006 is 600088183.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381880001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55731 + ... + 62206.

It is an arithmetic number, because the mean of its divisors is an integer number (71647335).

Almost surely, 2381880006 is an apocalyptic number.

381880006 is a deficient number, since it is larger than the sum of its proper divisors (191298674).

381880006 is a wasteful number, since it uses less digits than its factorization.

381880006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119558.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 381880006 is about 19541.7503310220. The cubic root of 381880006 is about 725.5081691356.

The spelling of 381880006 in words is "three hundred eighty-one million, eight hundred eighty thousand, six".

Divisors: 1 2 1619 3238 117937 235874 190940003 381880006