144450720 has 72 divisors (see below), whose sum is σ = 492942996. Its totient is φ = 38519808.

The previous prime is 144450661. The next prime is 144450739. The reversal of 144450720 is 27054441.

144450720 is a `hidden beast` number, since 144 + 450 + 72 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 127509264 + 16941456 = 11292^2 + 4116^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48717 + ... + 51596.

Almost surely, 2^144450720 is an apocalyptic number.

144450720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144450720 is an abundant number, since it is smaller than the sum of its proper divisors (348492276).

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

144450720 is a wasteful number, since it uses less digits than its factorization.

144450720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100334 (or 100323 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 144450720 is about 12018.7653276033. The cubic root of 144450720 is about 524.6945706441.

The spelling of 144450720 in words is "one hundred forty-four million, four hundred fifty thousand, seven hundred twenty".