Search a number
-
+
1920600047 = 19791279547
BaseRepresentation
bin111001001111010…
…0000011111101111
311221211221120222002
41302132200133233
512413133200142
6514325042515
765410555022
oct16236403757
94854846862
101920600047
118a6146273
1245725643b
13247b97142
1414310b1b9
15b392ba32
hex727a07ef

1920600047 has 8 divisors (see below), whose sum is σ = 2047276800. Its totient is φ = 1796482584.

The previous prime is 1920600001. The next prime is 1920600053. The reversal of 1920600047 is 7400060291.

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 1920600047 - 26 = 1920599983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1920599992 and 1920600019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920600247) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 638273 + ... + 641274.

It is an arithmetic number, because the mean of its divisors is an integer number (255909600).

Almost surely, 21920600047 is an apocalyptic number.

1920600047 is a deficient number, since it is larger than the sum of its proper divisors (126676753).

1920600047 is a wasteful number, since it uses less digits than its factorization.

1920600047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279645.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 1920600047 is about 43824.6511338082. The cubic root of 1920600047 is about 1243.0224670583.

The spelling of 1920600047 in words is "one billion, nine hundred twenty million, six hundred thousand, forty-seven".

Divisors: 1 19 79 1501 1279547 24311393 101084213 1920600047