144705744 has 80 divisors (see below), whose sum is σ = 418693440. Its totient is φ = 47848320.

The previous prime is 144705733. The next prime is 144705749. The reversal of 144705744 is 447507441.

It is a happy number.

144705744 is a `hidden beast` number, since 14 + 4 + 70 + 574 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 144705699 and 144705708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144705749) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 55314 + ... + 57870.

It is an arithmetic number, because the mean of its divisors is an integer number (5233668).

Almost surely, 2^144705744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144705744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209346720).

144705744 is an abundant number, since it is smaller than the sum of its proper divisors (273987696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144705744 is a wasteful number, since it uses less digits than its factorization.

144705744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705 (or 2693 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 36.

The square root of 144705744 is about 12029.3700583198. The cubic root of 144705744 is about 525.0031673278.

The spelling of 144705744 in words is "one hundred forty-four million, seven hundred five thousand, seven hundred forty-four".