144473784 has 128 divisors (see below), whose sum is σ = 450455040. Its totient is φ = 37596672.

The previous prime is 144473783. The next prime is 144473809. The reversal of 144473784 is 487374441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144473783) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180874 + ... + 181670.

It is an arithmetic number, because the mean of its divisors is an integer number (3519180).

Almost surely, 2^144473784 is an apocalyptic number.

144473784 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144473784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225227520).

144473784 is an abundant number, since it is smaller than the sum of its proper divisors (305981256).

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

144473784 is a wasteful number, since it uses less digits than its factorization.

144473784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909 (or 905 counting only the distinct ones).

The product of its digits is 301056, while the sum is 42.

The square root of 144473784 is about 12019.7247888627. The cubic root of 144473784 is about 524.7224946114.

The spelling of 144473784 in words is "one hundred forty-four million, four hundred seventy-three thousand, seven hundred eighty-four".