Search a number
-
+
144830401 = 448132321
BaseRepresentation
bin10001010000111…
…10111111000001
3101002112010221221
420220132333001
5244034033101
622212115041
73406016032
oct1050367701
9332463857
10144830401
1174831251
1240605a81
132400bb81
1415340a89
15caacaa1
hex8a1efc1

144830401 has 4 divisors (see below), whose sum is σ = 144867204. Its totient is φ = 144793600.

The previous prime is 144830393. The next prime is 144830423. The reversal of 144830401 is 104038441.

144830401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 84364225 + 60466176 = 9185^2 + 7776^2 .

It is a cyclic number.

It is not a de Polignac number, because 144830401 - 23 = 144830393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144830431) 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, 11680 + ... + 20641.

It is an arithmetic number, because the mean of its divisors is an integer number (36216801).

Almost surely, 2144830401 is an apocalyptic number.

It is an amenable number.

144830401 is a deficient number, since it is larger than the sum of its proper divisors (36803).

144830401 is an equidigital number, since it uses as much as digits as its factorization.

144830401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36802.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 144830401 is about 12034.5503031896. The cubic root of 144830401 is about 525.1538790051.

Adding to 144830401 its reverse (104038441), we get a palindrome (248868842).

The spelling of 144830401 in words is "one hundred forty-four million, eight hundred thirty thousand, four hundred one".

Divisors: 1 4481 32321 144830401