Search a number
-
+
103285849 = 293561581
BaseRepresentation
bin1100010100000…
…00010001011001
321012100110112211
412022000101121
5202420121344
614125435121
72362625632
oct612002131
9235313484
10103285849
1153336207
122a70baa1
13185242b4
14da08889
159103334
hex6280459

103285849 has 4 divisors (see below), whose sum is σ = 106847460. Its totient is φ = 99724240.

The previous prime is 103285799. The next prime is 103285859. The reversal of 103285849 is 948582301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 948582301 = 1993475957.

It can be written as a sum of positive squares in 2 ways, for example, as 68558400 + 34727449 = 8280^2 + 5893^2 .

It is a cyclic number.

It is not a de Polignac number, because 103285849 - 29 = 103285337 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103285859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1780762 + ... + 1780819.

It is an arithmetic number, because the mean of its divisors is an integer number (26711865).

Almost surely, 2103285849 is an apocalyptic number.

It is an amenable number.

103285849 is a deficient number, since it is larger than the sum of its proper divisors (3561611).

103285849 is an equidigital number, since it uses as much as digits as its factorization.

103285849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3561610.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 103285849 is about 10162.9645773268. The cubic root of 103285849 is about 469.1880488488.

The spelling of 103285849 in words is "one hundred three million, two hundred eighty-five thousand, eight hundred forty-nine".

Divisors: 1 29 3561581 103285849