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144006233 = 720572319
BaseRepresentation
bin10001001010101…
…01110001011001
3101000222021102012
420211111301121
5243331144413
622142315305
73366014150
oct1045256131
9330867365
10144006233
1174319018
1240288b35
1323ab09b7
14151a8597
15c9987a8
hex8955c59

144006233 has 4 divisors (see below), whose sum is σ = 164578560. Its totient is φ = 123433908.

The previous prime is 144006229. The next prime is 144006251. The reversal of 144006233 is 332600441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 332600441 = 1991671359.

It is a cyclic number.

It is not a de Polignac number, because 144006233 - 22 = 144006229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 144006199 and 144006208.

It is not an unprimeable number, because it can be changed into a prime (144006283) 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, 10286153 + ... + 10286166.

It is an arithmetic number, because the mean of its divisors is an integer number (41144640).

Almost surely, 2144006233 is an apocalyptic number.

It is an amenable number.

144006233 is a deficient number, since it is larger than the sum of its proper divisors (20572327).

144006233 is an equidigital number, since it uses as much as digits as its factorization.

144006233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20572326.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 144006233 is about 12000.2597055230. The cubic root of 144006233 is about 524.1558412702.

Adding to 144006233 its reverse (332600441), we get a palindrome (476606674).

The spelling of 144006233 in words is "one hundred forty-four million, six thousand, two hundred thirty-three".

Divisors: 1 7 20572319 144006233