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144022271 = 1187121333
BaseRepresentation
bin10001001010110…
…01101011111111
3101001000002102012
420211121223333
5243332203041
622142521435
73366112001
oct1045315377
9331002365
10144022271
117432a078
124029627b
1323ab80a3
14151b0371
15c99d3eb
hex8959aff

144022271 has 4 divisors (see below), whose sum is σ = 144144792. Its totient is φ = 143899752.

The previous prime is 144022259. The next prime is 144022273. The reversal of 144022271 is 172220441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 172220441 = 373461717.

It is a cyclic number.

It is not a de Polignac number, because 144022271 - 222 = 139827967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144022273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59480 + ... + 61853.

It is an arithmetic number, because the mean of its divisors is an integer number (36036198).

Almost surely, 2144022271 is an apocalyptic number.

144022271 is a deficient number, since it is larger than the sum of its proper divisors (122521).

144022271 is a wasteful number, since it uses less digits than its factorization.

144022271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122520.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 144022271 is about 12000.9279224567. The cubic root of 144022271 is about 524.1752989913.

The spelling of 144022271 in words is "one hundred forty-four million, twenty-two thousand, two hundred seventy-one".

Divisors: 1 1187 121333 144022271