144770 has 16 divisors (see below), whose sum is σ = 269568. Its totient is φ = 55920.

The previous prime is 144763. The next prime is 144773. The reversal of 144770 is 77441.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 144770.

It is not an unprimeable number, because it can be changed into a prime (144773) by changing a digit.

144770 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77 + ... + 543.

It is an arithmetic number, because the mean of its divisors is an integer number (16848).

2¹⁴⁴⁷⁷⁰ is an apocalyptic number.

144770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144770 is a deficient number, since it is larger than the sum of its proper divisors (124798).

144770 is a wasteful number, since it uses less digits than its factorization.

144770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 144770 is about 380.4865306420. The cubic root of 144770 is about 52.5080864339.

The spelling of 144770 in words is "one hundred forty-four thousand, seven hundred seventy", and thus it is an iban number.