144446720 has 72 divisors (see below), whose sum is σ = 377485920. Its totient is φ = 52520960.

The previous prime is 144446713. The next prime is 144446741. The reversal of 144446720 is 27644441.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8951 + ... + 19209.

It is an arithmetic number, because the mean of its divisors is an integer number (5242860).

Almost surely, 2^144446720 is an apocalyptic number.

144446720 is a gapful number since it is divisible by the number (10) 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 144446720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188742960).

144446720 is an abundant number, since it is smaller than the sum of its proper divisors (233039200).

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

144446720 is a wasteful number, since it uses less digits than its factorization.

144446720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10291 (or 10277 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 144446720 is about 12018.5989200073. The cubic root of 144446720 is about 524.6897274753.

The spelling of 144446720 in words is "one hundred forty-four million, four hundred forty-six thousand, seven hundred twenty".