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144281461 = 2322972731
BaseRepresentation
bin10001001100110…
…00111101110101
3101001111020221211
420212120331311
5243414001321
622152241421
73401241442
oct1046307565
9331436854
10144281461
1174496885
12403a0271
1323b7905c
141523a9c9
15ca000e1
hex8998f75

144281461 has 8 divisors (see below), whose sum is σ = 150675264. Its totient is φ = 137897760.

The previous prime is 144281441. The next prime is 144281479. The reversal of 144281461 is 164182441.

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 144281461 - 217 = 144150389 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 (144281441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51466 + ... + 54196.

It is an arithmetic number, because the mean of its divisors is an integer number (18834408).

Almost surely, 2144281461 is an apocalyptic number.

It is an amenable number.

144281461 is a deficient number, since it is larger than the sum of its proper divisors (6393803).

144281461 is a wasteful number, since it uses less digits than its factorization.

144281461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5051.

The product of its digits is 6144, while the sum is 31.

The square root of 144281461 is about 12011.7218166256. The cubic root of 144281461 is about 524.4895549632.

The spelling of 144281461 in words is "one hundred forty-four million, two hundred eighty-one thousand, four hundred sixty-one".

Divisors: 1 23 2297 2731 52831 62813 6273107 144281461